8th Class Mathematics Related to Competitive Exam Question Bank

done Arithmetic Total Questions - 154

• question_answer1)
  In an office the working hours are 10.30 AM to 5.30 PM and in between 30 minutes are spent on lunch. Find the ratio of office hours to the time spent for lunch.
  A)
  7:30                                   done clear
  B)
  1:14 done clear
  C)
  14:1              done clear
  D)
  30:7 done clear
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• question_answer2)
  In a cricket coaching camp, 1200 children are trained out of which 900 are selected for various matches. Ratio of non-selected children to the total number of children is
  A)
  300:120                 done clear
  B)
  4:1 done clear
  C)
  1:4             done clear
  D)
  120:300 done clear
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• question_answer3)
  Ratio of 250 ml to 2 L is
  A)
  25:200                   done clear
  B)
  8:1 done clear
  C)
  1:8              done clear
  D)
  2:1 done clear
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• question_answer4)
  For 25:10 :: 10:4, the mean proportion is
  A)
  25                          done clear
  B)
  10 done clear
  C)
  4                                        done clear
  D)
  100 done clear
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• question_answer5)
  If x : y:: y: z, then the correct statement is
  A)
   \[C.I.=A-P=P\]                done clear
  B)
   \[\left\{ {{\left( 1+\frac{R}{100k} \right)}^{nk}}-1 \right\}\] done clear
  C)
   \[{{R}_{1}}%\]               done clear
  D)
   \[{{R}_{2}}%\] done clear
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• question_answer6)
  First, third and the fourth terms of a proportion are 6, 12 and 36. Then the second term is
  A)
  12                          done clear
  B)
  18 done clear
  C)
  16                          done clear
  D)
  108 done clear
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• question_answer7)
  In a quiz programme the ratio of correct answers to incorrect answers is 5:2. If 16 incorrect answers are given then the number of correct answers given is
  A)
  80                          done clear
  B)
  40 done clear
  C)
  20                          done clear
  D)
  30 done clear
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• question_answer8)
  The middle terms of proportion are called
  A)
  antecedents            done clear
  B)
  mean terms done clear
  C)
  extremes                done clear
  D)
  consequents done clear
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• question_answer9)
  The ratio of Rs.3 and 60 paise is
  A)
  1:20                       done clear
  B)
  5:1 done clear
  C)
  1:2                                     done clear
  D)
  20:1 done clear
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• question_answer10)
  The ratio of the incomes of Kamala and Vimala is 2:3. If Kamala's income is Rs. 9000, then Vimala's income is
  A)
  Rs.13,500          done clear
  B)
  Rs.6000 done clear
  C)
  Rs.12,000             done clear
  D)
  None of these done clear
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• question_answer11)
  Mala and Bala got 75 marks and 25 marks respectively in an examination. Find the ratio of the marks scored by Mala to the total marks obtained by both of them?
  A)
  3:4           done clear
  B)
  3:1 done clear
  C)
  1:3                                     done clear
  D)
  4:3 done clear
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• question_answer12)
  The ratio of the least prime number to the least composite number is
  A)
  1:2             done clear
  B)
  2:3 done clear
  C)
  1:4                                     done clear
  D)
  1:3 done clear
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• question_answer13)
  A garrison has provisions for certain number of days. After 15 days, 1/4 th of the men left and if it as found that the provisions will now last just as before. How long was that?
  A)
  50 days                  done clear
  B)
  60 days done clear
  C)
  70 days                  done clear
  D)
  120 days           done clear
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• question_answer14)
  If the rent for grazing 40 cows for 20 days is Rs.370, how many cows can graze for Rs.111 for 30 days?
  A)
  60                          done clear
  B)
  8 done clear
  C)
  25                          done clear
  D)
  30 done clear
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• question_answer15)
  \[x\propto y.\]When \[x=24,\,y=40.\] Find x when y=130.
  A)
  56                                      done clear
  B)
  96 done clear
  C)
  78                          done clear
  D)
  120 done clear
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• question_answer16)
  175 men can dig a canal 3150 m long in 36 days. How many men are required to dig a canal 3900 m long in 24 days?
  A)
  256                        done clear
  B)
  225 done clear
  C)
  325                 done clear
  D)
  384 done clear
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• question_answer17)
  Asha can stitch 'x' shirts in \[A=P\left( 1+\frac{{{R}_{1}}}{100} \right)\left( 1+\frac{{{R}_{2}}}{100} \right)....\left( 1\frac{{{R}_{n}}}{100} \right),\] minutes. At this rate, how many shirts can she stitch in \[C.I.=P\left[ \left( 1+\frac{{{R}_{1}}}{100} \right)\left( 1+\frac{{{R}_{2}}}{100} \right)....\left( 1+\frac{{{R}_{n}}}{100} \right)-1 \right]\]th of an hour?
  A)
  50x                        done clear
  B)
   \[5\frac{1}{4}\]  done clear
  C)
  60x                        done clear
  D)
   \[A=P{{\left( 1+\frac{R}{100} \right)}^{5}}\left( 1+\frac{\frac{R}{4}}{100} \right)\] done clear
  View Solution play_arrow

• question_answer18)
  X can do a piece of work in 24 days, while Y alone can do it in 16 days. With the help of Z they finish the work in 8 days. Find in how many days Z can do the work alone?
  A)
  48 days    done clear
  B)
  36 days done clear
  C)
  24 days                  done clear
  D)
  12 days done clear
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• question_answer19)
  A can do a job in 6 days, B alone can do it in 8 days and C alone can finish the job in 24 days. A and B together are paid Rs.3 50. Then how much money is paid to C?
  A)
  Rs.50             done clear
  B)
  Rs. 40 done clear
  C)
  Rs.70                     done clear
  D)
  Rs.150 done clear
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• question_answer20)
  A cistern can be filled separately by two pipes in 12 and 16 minutes separately. If both fill pipes are opened together, when will the cistern be filled?
  A)
   \[{{V}_{0}}\]min                        done clear
  B)
   \[4\frac{6}{7}\]min done clear
  C)
   \[{{V}_{n}}={{V}_{0}}{{\left( 1-\frac{R}{100} \right)}^{n}}.\]min           done clear
  D)
    \[4\frac{1}{2}\] min done clear
  View Solution play_arrow

• question_answer21)
  Walking \[{{R}_{1}}%\] th of his usual rate, a boy reaches his school 4 minutes early. Find his usual time to reach the school.
  A)
  40min                    done clear
  B)
  32min done clear
  C)
  28min             done clear
  D)
  48min done clear
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• question_answer22)
  A man travels 100 kms in 5 hrs and another 200 kms in 15 hrs. Find his average speed.
  A)
  15km/hr            done clear
  B)
  10 km/hr done clear
  C)
  20km/hr                 done clear
  D)
  None of these done clear
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• question_answer23)
  A train running at a speed of 52 km/hr takes 15 sec to pass a man running at 4 km/hr in the same direction. Find the length of train.
  A)
  100m                     done clear
  B)
  150m done clear
  C)
  300m                     done clear
  D)
  200m done clear
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• question_answer24)
  A train 140m long is running at 60 km/hr. In how much time will it pass a tunnel 260 m long?
  A)
  18 sec                    done clear
  B)
  24 sec done clear
  C)
  30 sec                    done clear
  D)
  15 sec done clear
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• question_answer25)
  Excluding stoppages, the speed of a train is 45 km/hr and including stoppages it is 36 km/hr. For how many minutes does the train stop per hour?
  A)
  12min             done clear
  B)
  10min done clear
  C)
  8min                      done clear
  D)
  None of these done clear
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• question_answer26)
  The number of seats for admission is increased by 10% every year. If the number of seats in 2001 was 400, what were the number of seats in 2003?
  A)
  824                        done clear
  B)
  484 done clear
  C)
  500                        done clear
  D)
  480 done clear
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• question_answer27)
  The price of an article diminished twice successively, first by 30% and then by 40%. If the original price was Rs.1000, what is it now?
  A)
  Rs.400                   done clear
  B)
  Rs.300 done clear
  C)
  Rs.240                   done clear
  D)
  Rs.420 done clear
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• question_answer28)
  35% population of a town are men and 40% are women. If the numbers of children are 20,000, then the number of women will be?
  A)
  3200                      done clear
  B)
  30,050 done clear
  C)
  32,000                 done clear
  D)
  31,500 done clear
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• question_answer29)
  A positive number is by mistake divided by 6 instead of being multiplied by 6. What is the % error (approximately)?
  A)
  3.86                       done clear
  B)
  97.22 done clear
  C)
  83.27                     done clear
  D)
  75.35 done clear
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• question_answer30)
  After deduction of 5% from a certain sum and then 10% from the remainder, a sum of Rs. 171 is left. The original sum was
  A)
  Rs. 200                 done clear
  B)
  Rs. 250 done clear
  C)
  Rs. 150                 done clear
  D)
  Rs. 300 done clear
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• question_answer31)
  The CP of 25 articles is equal to the SP of 20 articles. Then gain % is
  A)
  25%             done clear
  B)
  20% done clear
  C)
  30%                       done clear
  D)
  50% done clear
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• question_answer32)
  A person sells 36 oranges per rupee and incurs a loss of 4%. Find how many oranges per rupee to be sold to have a gain of 8%?
  A)
  32             done clear
  B)
  30 done clear
  C)
  28                          done clear
  D)
  34 done clear
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• question_answer33)
  A customer saves Rs.15 when a discount of 20% on the marked price is offered. What did he pay for the article?
  A)
  Rs.120                   done clear
  B)
  Rs.80 done clear
  C)
  Rs.60        done clear
  D)
  Rs.75 done clear
  View Solution play_arrow

• question_answer34)
  A man sold 10 eggs for 5 rupees and gained 20%. How many eggs did he buy for 5 rupees?
  A)
  12                done clear
  B)
   \[\frac{25}{12}\] done clear
  C)
  25                          done clear
  D)
  None of these done clear
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• question_answer35)
  A shopkeeper's price is 50% above the cost price. If he allows his customer a discount of 30% what profit does he make?
  A)
  15%                                   done clear
  B)
  10% done clear
  C)
  5%                         done clear
  D)
  20% done clear
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• question_answer36)
  11 oranges are bought for Rs.10 and 10 oranges are sold for Rs.11. Find the gain (or) loss per cent.
  A)
  21% loss                done clear
  B)
  11% gain done clear
  C)
  21% gain            done clear
  D)
  11% loss done clear
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• question_answer37)
  Marked price of an article is 20% above the CP. He allows his customers a discount and makes a profit of 8%. Find the rate of discount.
  A)
  10%                done clear
  B)
  12% done clear
  C)
  20%                       done clear
  D)
  18% done clear
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• question_answer38)
  A man buys a radio for Rs.600 and sells it at a gain of 25%. He sold the radio for
  A)
  Rs.700                   done clear
  B)
  Rs.750 done clear
  C)
  Rs.900                   done clear
  D)
  Rs.1000 done clear
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• question_answer39)
  A shopkeeper sold two watches for Rs.425 each, gaining 10% on one and losing 10% on the other. Then he
  A)
  Neither gains nor loss done clear
  B)
  Gains 1% done clear
  C)
  Loses 1%            done clear
  D)
  None of these done clear
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• question_answer40)
  A single discount equal to a discount series of 10% and 20% is
  A)
  25%                       done clear
  B)
  30% done clear
  C)
  35%                       done clear
  D)
  28% done clear
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• question_answer41)
  A man purchased two articles for Rs.3000 each, by selling those he gains 20% on the one and loses 20% on the other. Find the gain (or) loss per cent on the whole transaction.
  A)
  4% loss                  done clear
  B)
  4% gain done clear
  C)
  no profit, no loss                done clear
  D)
  None of these done clear
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• question_answer42)
  At what rate of interest per annum will a sum double itself in 8 years, if calculated as per Simple Interest formula?
  A)
  25%                                   done clear
  B)
   \[{{n}_{1}}\] done clear
  C)
   \[{{R}_{2}}%\]             done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer43)
  A milkman borrowed Rs.2500 from two money lenders. For one loan, he paid 5% p.a. and for the other, he paid 7% p.a. The total interest paid after two years was Rs.275. Calculate the money he borrowed at 7% interest?
  A)
  Rs.1875                 done clear
  B)
  Rs.1000 done clear
  C)
  Rs.625            done clear
  D)
  Rs.1200 done clear
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• question_answer44)
  Of a certain sum, \[{{n}_{2}}\]rd is invested at 3%\[{{R}_{k}}%\]th at 6% and the rest at 8%. If the SI for 2 years from all these investments amounts to Rs.600. Then the original sum was
  A)
  Rs.2000                 done clear
  B)
  Rs.3000 done clear
  C)
  Rs.4000                 done clear
  D)
  Rs.5000 done clear
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• question_answer45)
  A sum was put at SI at a certain rate for 4 years. Had it been put at 2% higher rate, it would have fetched Rs. 56 more? Find the sum.
  A)
  Rs. 500                  done clear
  B)
  Rs. 600 done clear
  C)
  Rs. 700      done clear
  D)
  Rs. 800 done clear
  View Solution play_arrow

• question_answer46)
  In what time will Rs.72 become Rs. 81 at \[{{n}_{1}}+{{n}_{2}}+.....{{n}_{k}}\]p.a. SI?
  A)
   \[V={{V}_{0}}{{\left( 1-\frac{{{R}_{1}}}{100} \right)}^{{{n}_{1}}}}.{{\left( 1-\frac{{{R}_{2}}}{100} \right)}^{{{n}_{2}}}}....{{\left( 1-\frac{{{R}_{k}}}{100} \right)}^{{{n}_{k}}}}\]year                  done clear
  B)
   \[=P{{\left( 1+\frac{R}{100} \right)}^{n}}\]years             done clear
  C)
  2 years               done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer47)
  Bhanu borrowed a certain sum of money at 12% per annum for 3 years and madhuri borrowed the same sum at 24% per annum for 10 years. Find the ratio of their amounts.
  A)
  1:3                                     done clear
  B)
  2:1 done clear
  C)
  2:3                                     done clear
  D)
  2:5 done clear
  View Solution play_arrow

• question_answer48)
  Gopi borrowed Rs.1800 at 12% per annum for 2 years and Krishna borrowed Rs.1200 at 18% per annum for 3 years. Then the ratio of interests paid by them is?
  A)
  1:2                                     done clear
  B)
  2:3 done clear
  C)
  3:1                                     done clear
  D)
  2:1 done clear
  View Solution play_arrow

• question_answer49)
  Divide  Rs. 8000 into two parts so that the SI on the first part for 5 years at 12% per annum is equal to SI on the second part for 2 years at 18 % per annum?
  A)
  2000, 6000                        done clear
  B)
  5000, 3000            done clear
  C)
  4000, 4000                        done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer50)
  A sum of Rs.450 amounts to Rs.495 in 2 years, hi what time will the sum of Rs.820 amount to Rs. 943 at the same rate?
  A)
  3 years          done clear
  B)
  2 years                 done clear
  C)
  4 years                   done clear
  D)
  6 years done clear
  View Solution play_arrow

• question_answer51)
  Find the SI on Rs.1800 from 21st Feb 2003 to 12th April 2003 at 7.3 % rate per annum.
  A)
  Rs.18.25                            done clear
  B)
  Rs.18.00 done clear
  C)
  Rs.18.50               done clear
  D)
  Rs.18.75            done clear
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• question_answer52)
  A sum of money, at compound interest, yields Rs.200 and Rs.220 at the end of first and second year respectively. The rate % is                                             
  A)
  20                          done clear
  B)
  15 done clear
  C)
  10                     done clear
  D)
  5 done clear
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• question_answer53)
  The difference in SI and CI on a certain sum of money in 2 years at 15% p.a. is Rs.544. The sum is
  A)
  Rs.6000                 done clear
  B)
  Rs.6200 done clear
  C)
  Rs.6300                 done clear
  D)
  Rs.6400 done clear
  View Solution play_arrow

• question_answer54)
  The CI on Rs.8000 for 1 year at 5% p.a. payable half-yearly is
  A)
  Rs.800                   done clear
  B)
  Rs.810 done clear
  C)
  Rs.400                   done clear
  D)
  Rs.405 done clear
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• question_answer55)
  The present population of a town is 25,000. It grows at 4%, 5% and 8% during first year, second year and third year is   respectively, the population after 3 years is
  A)
  29,484               done clear
  B)
  28,696                        done clear
  C)
  24,576                   done clear
  D)
  30,184                     done clear
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• question_answer56)
  The cost of a vehicle is Rs.1,75,000. If its value depreciates at the rate of 20% per annum, then the total depreciation after 3 years was                                                 
  A)
  Rs.86,400             done clear
  B)
  Rs.82.500                      done clear
  C)
  Rs.84,500             done clear
  D)
  Rs.85,400          done clear
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• question_answer57)
  The CI on a certain sum for 2 years at 10% per annum is Rs.525. The SI on the same sum for double the time at half the rate per cent per annum is                                 
  A)
  Rs.400                   done clear
  B)
  Rs.500                done clear
  C)
  Rs.600                   done clear
  D)
  Rs.800     done clear
  View Solution play_arrow

• question_answer58)
  A sum of money doubles itself in 3 years at CI, when the interest is compounded annually. In how many years will it amount to 16 times of itself?
  A)
  6 years                   done clear
  B)
  8 years done clear
  C)
  12 years                 done clear
  D)
  16 years done clear
  View Solution play_arrow

• question_answer59)
  A sum lent at SI amounts in 2 years to Rs.578.40 and in 3 years to Rs.614.55. Find the rate of interest.
  A)
  5%                         done clear
  B)
   \[=\frac{R}{{{\left( 1+\frac{R}{100} \right)}^{n}}}\] done clear
  C)
  7%                         done clear
  D)
   \[{{R}_{1}}%\] done clear
  View Solution play_arrow

• question_answer60)
  Articles are bought at 42 paise a dozen and sold at 85 paise a score (A group of twenty). The profit per cent is
  A)
  21%                       done clear
  B)
  213% done clear
  C)
  33. %                                 done clear
  D)
  32% done clear
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• question_answer61)
  The selling price when goods which cost Rs.65 are sold at a loss of 10% is
  A)
  Rs.71.50                done clear
  B)
  Rs.58.50 done clear
  C)
  Rs.59.75                            done clear
  D)
  Rs.6.50                      done clear
  View Solution play_arrow

• question_answer62)
  A publisher sells books to a retail dealer at Rs.5 a copy but allows 25 copies to count as 24. If the retailer sells each of the 25 copies Rs.6, his profit per cent is                      
  A)
  20%                                   done clear
  B)
  25%              done clear
  C)
  24%                                   done clear
  D)
  40%                   done clear
  View Solution play_arrow

• question_answer63)
  If the discount is 10%, an item bought for Rs.9 is priced at
  A)
  Rs.11                     done clear
  B)
  Rs.10                 done clear
  C)
  Rs.8.10                  done clear
  D)
  Rs.12 done clear
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• question_answer64)
  8% of Rs.625 is equal to                                  
  A)
  Rs.50             done clear
  B)
  Rs.75 done clear
  C)
  Rs.80                     done clear
  D)
  Rs.100 done clear
  View Solution play_arrow

• question_answer65)
  If a merchant estimates his profits as 20% of the selling price, what is his real profit per cent?
  A)
  25%            done clear
  B)
  20%                          done clear
  C)
  22%                       done clear
  D)
  30%                    done clear
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• question_answer66)
  A cycle is sold for Rs.880 at a loss of 20%. For how much should it be sold to gain 10%?                             
  A)
  Rs.1400                done clear
  B)
  Rs.1210                     done clear
  C)
  Rs.1100                done clear
  D)
  Rs.1000              done clear
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• question_answer67)
  A train passes a telegraph post in 40 seconds moving at the rate of 36 km. per hour. Find the length of the train.             
  A)
  300m                     done clear
  B)
  400m done clear
  C)
  500m                     done clear
  D)
  600m             done clear
  View Solution play_arrow

• question_answer68)
  Two bicyclists do the same journey by travelling respectively at the rate of 9 and 10 km an hour. Find the distance travelled when one takes 32 minutes longer than the other.
  A)
  42km                     done clear
  B)
  44km done clear
  C)
  48km              done clear
  D)
  50km done clear
  View Solution play_arrow

• question_answer69)
  If the cost of the book worth Rs.50 is increased by Rs.25, the rate of increase is                                          
  A)
  25%                       done clear
  B)
  20% done clear
  C)
  50%                done clear
  D)
  10% done clear
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• question_answer70)
  A men spends Rs.3500 and save\[{{R}_{2}}%\] of his income. His monthly income is
  A)
  Rs.4000       done clear
  B)
  Rs.3800 done clear
  C)
  Rs.4200                 done clear
  D)
  Rs.4500 done clear
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• question_answer71)
  If A's salary is 50% more than B's, then by what % B's salary is less than A's salary?
  A)
   \[=P\left( 1+\frac{{{R}_{1}}}{100} \right)\times \left( 1+\frac{{{R}_{2}}}{100} \right).\]                done clear
  B)
   \[=P{{\left( 1-\frac{R}{100} \right)}^{n}}.\] done clear
  C)
  33                          done clear
  D)
  30 done clear
  View Solution play_arrow

• question_answer72)
  The product of two number remains constant; if one of them increases by 40%, by what % does the second get diminished?
  A)
   \[=\frac{P}{{{\left( 1-\frac{R}{100} \right)}^{n}}}\]             done clear
  B)
   \[\frac{a}{b}=K\]              done clear
  C)
   \[{{a}_{1}}\]                               done clear
  D)
  60%               done clear
  View Solution play_arrow

• question_answer73)
  The price of wheat has increased by 60%. In order to restore the original price, the new price must be reduced by      
  A)
  37.5%                    done clear
  B)
  33%                  done clear
  C)
  34%                       done clear
  D)
  40%                  done clear
  View Solution play_arrow

• question_answer74)
  The numerator of a fraction is increased by 20% and its denominator be diminished by 10%. The value of the fraction is\[{{b}_{1}}\] , then the fraction is         
  A)
   \[\frac{{{a}_{1}}}{{{b}_{1}}}=\]                  done clear
  B)
   \[{{a}_{2}}\] done clear
  C)
   \[{{b}_{2}}\]                               done clear
  D)
   \[\frac{{{a}^{2}}}{{{b}^{2}}}=k\]      done clear
  View Solution play_arrow

• question_answer75)
  On what sum will the compound interest for 3 years at 5% amount s to Rs.1261?                                
  A)
  Rs.7000                 done clear
  B)
  Rs.8000              done clear
  C)
  Rs.9000                 done clear
  D)
  Rs.1000 done clear
  View Solution play_arrow

• question_answer76)
  A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amount to eight times itself?                                             
  A)
  12yrs.               done clear
  B)
  14yrs.               done clear
  C)
  16yrs.                     done clear
  D)
  18yrs. done clear
  View Solution play_arrow

• question_answer77)
  If a certain sum is doubled in 8 years on simple interest, in how many years will it be 4 times?        
  A)
  24                   done clear
  B)
  16 done clear
  C)
  32                          done clear
  D)
  12 done clear
  View Solution play_arrow

• question_answer78)
  The difference of simple interest on 13% p.a. and 12% p.a. of a certain sum in one year is Rs.110.00, then the sum is
  A)
  Rs.12000              done clear
  B)
  Rs.13000 done clear
  C)
  Rs.11000        done clear
  D)
  Rs.16000 done clear
  View Solution play_arrow

• question_answer79)
  At compound interest, if a certain sum of money doubles in n years then the amount will be four fold in
  A)
   \[\frac{{{a}_{1}}}{{{b}_{1}}}=\frac{{{a}_{2}}}{{{b}_{2}}}\]               done clear
  B)
   \[\Rightarrow \] done clear
  C)
  2n years           done clear
  D)
  4n years done clear
  View Solution play_arrow

• question_answer80)
  Rs.16000 are invested at 10% p.a. compounded semi-annually amounts to Rs. 18522. Then the period of investment is
  A)
  1.5 years                done clear
  B)
  3 years done clear
  C)
  2 years                   done clear
  D)
   \[\frac{5}{2}\] years done clear
  View Solution play_arrow

• question_answer81)
  A man buys 5 apples for Rs.3 and sold each for Rs.2. What did he gain or lose?
  A)
   \[\Rightarrow \]gain          done clear
  B)
  50% gain done clear
  C)
   \[\frac{{{a}_{1}}}{{{a}_{2}}}=\frac{{{b}_{1}}}{{{b}_{2}}}\]loss                      done clear
  D)
   \[\frac{100}{3}%\]gain done clear
  View Solution play_arrow

• question_answer82)
  A dishonest dealer professes to sell his goods at cost price, but uses a weight of 900 grams for a kilogram weight. Find his real gain per cent.
  A)
   \[{{a}_{1}}:{{a}_{2}}::{{b}_{1}}:{{b}_{2}}\]            done clear
  B)
  12% done clear
  C)
  11%                       done clear
  D)
  13.2% done clear
  View Solution play_arrow

• question_answer83)
  By selling goods for Rs.153, a man loses 10%. For how much should he sell them to gain 20%?
  A)
  Rs.204                   done clear
  B)
  Rs.200 done clear
  C)
  Rs.201                   done clear
  D)
  Rs.203 done clear
  View Solution play_arrow

• question_answer84)
  I lost 20% by selling a watch for Rs.64. What per cent shall I gain or lose by selling it for Rs.100?
  A)
  10                          done clear
  B)
  20 done clear
  C)
  25                          done clear
  D)
  30 done clear
  View Solution play_arrow

• question_answer85)
  If a commission of 10% is given on the written price, the gain is 50%. What shall be the percentage of gain, if the commission is increased to 25%?
  A)
  20                                      done clear
  B)
  22 done clear
  C)
  25                                      done clear
  D)
  26 done clear
  View Solution play_arrow

• question_answer86)
  A man sold a watch for Rs.60 and lost something. Had he sold it for Rs.75, his gain would have been double the former loss. Find the cost price of the watch.
  A)
  60                                      done clear
  B)
  62 done clear
  C)
  64                                      done clear
  D)
  65 done clear
  View Solution play_arrow

• question_answer87)
  The fourth proportion of 5,15,20 is
  A)
  30                          done clear
  B)
  25 done clear
  C)
  60                          done clear
  D)
   \[{{a}_{1}}:{{a}_{2}}={{b}_{1}}:{{b}_{2}}\] done clear
  View Solution play_arrow

• question_answer88)
  \[\frac{a}{b}=\frac{c}{d'}\]then \[\frac{ma+nc}{mb+nd}=\]
  A)
  an : bm                  done clear
  B)
  m : n done clear
  C)
  a : b              done clear
  D)
  md : an done clear
  View Solution play_arrow

• question_answer89)
  A started a business investing Rs.35000. After 6 months, B joined him with capital Rs.60000. At the end of year, a profit of Rs.26000 divided with their capital. Find the difference of their earnings:
  A)
  Rs. 1000                done clear
  B)
  Rs. 2000 done clear
  C)
  Rs. 2500                done clear
  D)
  Rs. 3000 done clear
  View Solution play_arrow

• question_answer90)
  If x: y = 5 :2, then value of  is
  A)
  22:29                     done clear
  B)
  29:22 done clear
  C)
  61:26                     done clear
  D)
  26:61 done clear
  View Solution play_arrow

• question_answer91)
  A fort is provisioned for 42 days, after 10 days a reinforcement of 200 men arrives and the food will now last 24 days. How many men were there in the fort?
  A)
  300 men                done clear
  B)
  400 men done clear
  C)
  500 men                done clear
  D)
  600 men done clear
  View Solution play_arrow

• question_answer92)
  Some men promised to do a job in 18 days, but 6 of them became absent and remainder men did the job in 20 days. What is the original number of men?
  A)
  50                          done clear
  B)
  52 done clear
  C)
  56                          done clear
  D)
  60 done clear
  View Solution play_arrow

• question_answer93)
  15 years hence a man will be just 4 times as old as he was 15 years ago. His present age is:
  A)
  25 years         done clear
  B)
  20 years done clear
  C)
  15 years                 done clear
  D)
  10 years done clear
  View Solution play_arrow

• question_answer94)
  If\[2A=3B=4C,\]then \[A:B:C:\]is:
  A)
   \[{{a}_{1}},{{a}_{2}}\]                        done clear
  B)
  \[{{a}_{1}}\,\,{{b}_{1}}\] done clear
  C)
   \[{{a}_{2}}\,\,{{b}_{2}}=k\]                done clear
  D)
   \[\therefore \] done clear
  View Solution play_arrow

• question_answer95)
  5% of 10% of Rs.175 is equal to:
  A)
  Rs.8.75                  done clear
  B)
  Rs.0.50 done clear
  C)
  Rs.0.875             done clear
  D)
  Rs.17.50 done clear
  View Solution play_arrow

• question_answer96)
  The price of cooking oil has increased by 25%. The percentage of reduction that a family should effect in the use of cooking oil so as not to increase the expenditure on this account is:
  A)
  15%                       done clear
  B)
  20% done clear
  C)
  25%                       done clear
  D)
  30%                done clear
  View Solution play_arrow

• question_answer97)
  If 10% of m is the same as 20% of n then m: n is equal to:  
  A)
  1:2                                     done clear
  B)
  2:1 done clear
  C)
  5:1                                     done clear
  D)
  10:1 done clear
  View Solution play_arrow

• question_answer98)
  The average of 25 results is 18; that of first 12 is 14 and of the last 12 is 17, their thirteenth result is:
  A)
  78                       done clear
  B)
  85 done clear
  C)
  28                          done clear
  D)
  72 done clear
  View Solution play_arrow

• question_answer99)
  A ship sails out to a mark at the rate of 15km/hr and sails back at the rate of 10 km/hr. The average rate of sailing is:
  A)
  12.5km/hr              done clear
  B)
  12km/hr done clear
  C)
  25km/hr                 done clear
  D)
  5km/hr done clear
  View Solution play_arrow

• question_answer100)
  Suresh has covered a distance of 6 km in 45 minutes. If he covers one half of the distance in  \[{{a}_{2}}\,\,{{b}_{2}}={{a}_{2}}\,\,{{b}_{2}}\] rd time, what should be the speed in km/hr to cover the remaining distance?
  A)
  12km/h            done clear
  B)
  16km/h done clear
  C)
  3km/h                    done clear
  D)
  8km/h                 done clear
  View Solution play_arrow

• question_answer101)
  A merchant buys 200 kg of rice at Rs.7.25 per kg, 400 kg of rice at Rs.5.75 per kg. He mixes them and sells one third of mixture at Rs.6 per kg. At what rate should he sell the remaining mixture so that he may earn a profit of 20% on the whole out lay?                                                  
  A)
  Rs.28.25 per kg                  done clear
  B)
  Rs.13.25 per kg done clear
  C)
  Rs.8.25 per kg      done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer102)
  A merchant borrowed Rs.2500 from two money lenders. For one loan he paid 12% per annum and for the other 14% per annum. The total interest paid for one year was Rs.326. How much did he borrow at each rate?
  A)
  1200and 1300    done clear
  B)
  1350 and 1150 done clear
  C)
  1225 and 275        done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer103)
  The average of \[31\frac{1}{2},32\frac{1}{2},31\frac{2}{3}\] and \[33\frac{3}{4}\] is:
  A)
   \[\Rightarrow \]                 done clear
  B)
   \[{{a}_{1}}:{{a}_{2}}={{b}_{2}}:{{b}_{1}}\] done clear
  C)
   \[{{a}_{1}}:{{a}_{2}}::{{b}_{2}}:{{b}_{1}}\]                     done clear
  D)
   \[8\times 32=256,16\times 16=256,32\times 8=256\] done clear
  View Solution play_arrow

• question_answer104)
  Two successive discounts of 10% and 5% are equal to a single discount of:
  A)
  7%                                     done clear
  B)
   \[256\times 1=256.\] done clear
  C)
   \[\frac{1}{n}\]                done clear
  D)
  15% done clear
  View Solution play_arrow

• question_answer105)
  A dealer makes her goods at 125% of cost price and then allow a 4% discount for cash payment. Calculate his profit on cash sales:
  A)
  10%                       done clear
  B)
  15% done clear
  C)
  20%              done clear
  D)
  25% done clear
  View Solution play_arrow

• question_answer106)
  A man has some hens and cows. If the number of heads be 48 and the number of feet 140. The number of hens will be:
  A)
  26                 done clear
  B)
  24 done clear
  C)
  23                          done clear
  D)
  22 done clear
  View Solution play_arrow

• question_answer107)
  A bag contains Rs600 in the form of 1 - rupee, 50 paise and 25 paise coins in the ratio 3 :4: 12, the number of 25 paise coins is:
  A)
  600                        done clear
  B)
  900 done clear
  C)
  1200                      done clear
  D)
  1376                          done clear
  View Solution play_arrow

• question_answer108)
  A man loses 12-% of his money and after spending 70% of the remainder, he was left with Rs.210. The money that he had at the beginning is
  A)
  Rs.810                   done clear
  B)
  Rs.800 done clear
  C)
  Rs.790                   done clear
  D)
  Rs.780 done clear
  View Solution play_arrow

• question_answer109)
  By selling a suitcase for Rs.570, a man loses 5%. At what price must he sell it to gain 5%?
  A)
  Rs.630              done clear
  B)
  Rs.650 done clear
  C)
  Rs.580                   done clear
  D)
  Rs.620 done clear
  View Solution play_arrow

• question_answer110)
  The average of twenty results is 18, that of first 9 is Hand that of last 9 is 17. The average of middle two results is
  A)
  45                          done clear
  B)
  50.5 done clear
  C)
  40.5              done clear
  D)
  51.5 done clear
  View Solution play_arrow

• question_answer111)
  If p is 95% of q, then what percentage of p is q?
  A)
  105%                     done clear
  B)
  105.3% done clear
  C)
  110%                     done clear
  D)
  115% done clear
  View Solution play_arrow

• question_answer112)
  A boy takes 20 minutes to reach the school at an average speed of 12 km/hour. If he wants to reach the school in 15 minutes, his average speed (in km/hour) will be
  A)
  16km/h        done clear
  B)
  17km/h              done clear
  C)
  18km/h                  done clear
  D)
  19km/h             done clear
  View Solution play_arrow

• question_answer113)
  A number is increased by 10% and then reduced by 10%, then the number                                   
  A)
  Doesn?t change                  done clear
  B)
  Decreases by 1%      done clear
  C)
  Increases by 1%                 done clear
  D)
  None of these       done clear
  View Solution play_arrow

• question_answer114)
  Ram owns a plot worth Rs.10,000. He sells it to Shyam at a profit of 10%. After sometime Shyam sells it back to Ram at a 10% loss, then Ram overall
  A)
  Losses Rs.100                    done clear
  B)
  Losses Rs.900 done clear
  C)
  Gains Rs.100                     done clear
  D)
  gains Rs.1,106 done clear
  View Solution play_arrow

• question_answer115)
  If a radio is sold at Rs.972, then profit is 8%. If it is sold at Rs.872, then there is a loss of
  A)
  Rs.28                 done clear
  B)
  Rs.25 done clear
  C)
  Rs.20                     done clear
  D)
  Rs.15 done clear
  View Solution play_arrow

• question_answer116)
  Sita's salary was reduced by 10%. In order to reach her salary back to the original amount it must be raised by
  A)
   \[\frac{1}{5}\]              done clear
  B)
   \[\frac{1}{8}\] done clear
  C)
   \[\frac{1}{8}\]                  done clear
  D)
   \[\frac{1}{6}\] done clear
  View Solution play_arrow

• question_answer117)
  If the cost price of 6 articles is equal to the selling price of 4 articles, then the gain per cent is
  A)
  35%                       done clear
  B)
  45% done clear
  C)
  40%                       done clear
  D)
  50% done clear
  View Solution play_arrow

• question_answer118)
  A water tap fills a tank in p hours and the tap of the bottom of the tank empties it in q hours. If p is less than q and when both the taps are open, the tank is filled in r hours. Then
  A)
   \[\frac{1}{6}\]                  done clear
  B)
   \[{{m}_{1}}\] done clear
  C)
   \[{{w}_{1}}\]                  done clear
  D)
   \[{{d}_{1}}\] done clear
  View Solution play_arrow

• question_answer119)
  The compound interest on Rs.8,000 at 20% per annum for 9 months compounded quarterly is
  A)
  1,260                     done clear
  B)
  1,261 done clear
  C)
  1,271                     done clear
  D)
  1,281 done clear
  View Solution play_arrow

• question_answer120)
  Profit of an article is
  A)
  The price at which an article is sold. done clear
  B)
  The price at which an article is bought done clear
  C)
  Difference between selling price and cost price, if selling price < cost price. done clear
  D)
  Difference between selling price and cost price, if selling price > cost price. done clear
  View Solution play_arrow

• question_answer121)
  The condition for two ratios to be equal is
  A)
  Product of means is equal to antecedents done clear
  B)
  Product of extremes is equal to consequents done clear
  C)
  Antecedents are equal to consequents              done clear
  D)
  Product of means is equal to product of extremes    done clear
  View Solution play_arrow

• question_answer122)
  M men agreed to purchase a gift for Rs. C. If 3 men drop out, how much more will each have to contribute towards the purchase of the gift?
  A)
   \[{{w}_{2}}\]      done clear
  B)
   \[{{d}_{2}}\] done clear
  C)
   \[{{m}_{1}}{{d}_{1}}{{w}_{2}}={{m}_{2}}{{d}_{2}}{{w}_{1}}\]                  done clear
  D)
   \[\text{Averagespeed=}\frac{\text{Total distance travelled}}{\text{Total time taken}}\] done clear
  View Solution play_arrow

• question_answer123)
  If the cost of printing a book of 380 pages with 20 lines on each page and on an average 11 words in each line is Rs.19, then the cost of printing a book with 280 pages 22 lines on each page and 10 words in each line is
  A)
  Rs.14              done clear
  B)
  Rs.16 done clear
  C)
  Rs.18                     done clear
  D)
  Rs.20 done clear
  View Solution play_arrow

• question_answer124)
  Six diesel engines consume 900 liters of diesel, when each one is running for 5 hrs a day. How much diesel will be required by 9 engines, each running 8 hrs a day when 5 diesel engines of former type consume as much diesel as 8
  A)
  1500 lit                  done clear
  B)
  1250 lit done clear
  C)
  1350 lit                  done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer125)
  A can do a job in 20 days, B in 30 days and C in 60 days. If A is helped on every 3rd day by B and C, then in how many days, the job is finished?
  A)
  12 days                  done clear
  B)
  15 days done clear
  C)
  20 days                  done clear
  D)
  10 days done clear
  View Solution play_arrow

• question_answer126)
  P and Q can do a job in 25 days and 30 days respectively. They work together for 5 days and then p leaves. Q will finish the rest of work in how many days?
  A)
  19 days             done clear
  B)
  25 days done clear
  C)
  35 days                  done clear
  D)
  30 days done clear
  View Solution play_arrow

• question_answer127)
  An empty pipe can empty \[=Speed\times Time\text{ }taken\] of cistern in 20 minutes. In 9 minutes, what part of cistern will be emptied?
  A)
   \[\left( x+y \right)\]                                    done clear
  B)
   \[\left( x-y \right)\] done clear
  C)
   \[2n=3\]                           done clear
  D)
   \[\left( x-y \right)\] done clear
  View Solution play_arrow

• question_answer128)
  A boy has enough money to buy 20 books. If each book costs 25 paise less, he could buy two more books and still have 70 paise left. The money boy has is?
  A)
  Rs. 16                    done clear
  B)
  Rs. 24 done clear
  C)
  Rs. 48        done clear
  D)
  Rs. 36 done clear
  View Solution play_arrow

• question_answer129)
  A man bought goods worth Rs.6000 and sold half of them at a gain of 10%. At what gain per cent must he sell the remainder to get a gain of 25% on the whole?
  A)
  40%        done clear
  B)
  25% done clear
  C)
  30%                                   done clear
  D)
  20% done clear
  View Solution play_arrow

• question_answer130)
  A and B undertake to do a piece of work for Rs.200. A can do it in 6 days and B in 8 days. With the help of C they finish it in 3 days. How much is paid to C?
  A)
  Rs.25          done clear
  B)
  Rs.26 done clear
  C)
  Rs.27                     done clear
  D)
  Rs.28 done clear
  View Solution play_arrow

• question_answer131)
  Two men and a boy can do a piece of work in 5 days. While a man and 2 boys can do it in 6 days. If a man is paid at the rate of Rs.28 a week, what should be the wages of a boy?
  A)
  Rs.10                     done clear
  B)
  Rs.12 done clear
  C)
  Rs.16            done clear
  D)
  Rs.18 done clear
  View Solution play_arrow

• question_answer132)
  In an examination 52% candidates failed in English, 42% in math?s and 17% in both. The percentage of those passed in both the subjects is:
  A)
  23%                       done clear
  B)
  40% done clear
  C)
  53%                       done clear
  D)
  33% done clear
  View Solution play_arrow

• question_answer133)
  Find the sum of money which increases by \[=\frac{3}{2}years\]of itself every year and amounts to Rs.450 in 5 years. If calculated as per simple interest formula.
  A)
  Rs.100                   done clear
  B)
  Rs.150 done clear
  C)
  Rs.300               done clear
  D)
  Rs.400 done clear
  View Solution play_arrow

• question_answer134)
  I buy two watches for Rs.1350 and sell one so as to lose 6% and the other so as to gain 7.5% and on the whole I neither lose nor gain. What is price of watch which was sold at a loss?
  A)
  700                        done clear
  B)
  740 done clear
  C)
  750              done clear
  D)
  780 done clear
  View Solution play_arrow

• question_answer135)
  A and B can do a piece of work in 18 days, B and C in 24 days, A and C in 36 days. In what time can they do it all working together?
  A)
  18                          done clear
  B)
  17 done clear
  C)
  16              done clear
  D)
  15 done clear
  View Solution play_arrow

• question_answer136)
  The ratio of the ages of A and B ten years before was 3:5. The ratio of their presents ages is 2:3, their ages are respectively:
  A)
  30, 50                    done clear
  B)
  20, 30                    done clear
  C)
  40, 60               done clear
  D)
  16, 24 done clear
  View Solution play_arrow

• question_answer137)
  10 years ago the age of the father was 5 times that of the son. 20 years hence the age of the father will be the twice that of the son. The present age of the father (in years) is:
  A)
  40 years                 done clear
  B)
  45 years done clear
  C)
  60 years            done clear
  D)
  70 years done clear
  View Solution play_arrow

• question_answer138)
  729 ml of a mixture contains milk and water in the ratio 7:2. How much more water is to be added to get a new mixture containing milk and water in the ratio 7:3?
  A)
  600 ml                   done clear
  B)
  710 ml done clear
  C)
  520 ml                   done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer139)
  The captain of a cricket team of 11 players is 25 years oldest and the wicketkeeper is 3 years older than the captain. If the ages of these two are excluded, the average age of the remaining players is 1 year less than the average age of the whole team. The average of the whole team is:
  A)
  21.5 year              done clear
  B)
  22 year done clear
  C)
  22.5 year              done clear
  D)
  23 year       done clear
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• question_answer140)
  Ram's efficiency is 30% more than his friend Shyam. There is a work to be done which Ram can do exactly in 20 days working alone. Ram works for 10 days and Shyam joins him and they together complete the work. The ratio of work done by Shyam to work done by Ram:
  A)
  3:17                       done clear
  B)
  5:17 done clear
  C)
  7:17                       done clear
  D)
  none of these done clear
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• question_answer141)
  The salaries of A, B and C together amount to Rs.333, if they spend 80%, 85% and 75% of their respective salaries'. If their savings are 7:6: 9, then their respective salaries are
  A)
  Rs.102, Rs.118, Rs.113     done clear
  B)
  Rs.105, Rs.120, Rs.108 done clear
  C)
  Rs.85, Rs.125, Rs.123      done clear
  D)
  None of these done clear
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• question_answer142)
  A candidate who gets 30% of the marks in an examination fails by 50 marks. Another candidate who gets 320 marks fails by 30 marks. Then the maximum marks is
  A)
  800          done clear
  B)
  900 done clear
  C)
  1,000                     done clear
  D)
  1,100 done clear
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• question_answer143)
  Which discount series is profitable to the buyer 25%, 12%, 3%, or 18%, 1.7%, 5%?
  A)
  First         done clear
  B)
  Second done clear
  C)
  Both                       done clear
  D)
  Neither done clear
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• question_answer144)
  In an examination 80% passed in English, 85% in Maths, 75% in both and 40 students failed in both subjects. Then the number of students appeared are
  A)
  Rs.300                   done clear
  B)
  Rs.400 done clear
  C)
  Rs.500                   done clear
  D)
  Rs.600 done clear
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• question_answer145)
  Consider the following statements. (I) If a sum of money is lent at simple interest, then the: (II) Money gets doubled in 5 years if the rate of interest is \[{{R}_{1}}%\] (III) Money gets doubled in 5 years if the rate of interest 20%                                           (IV) Money becomes four times in 10 years if it gets doubled in 5 years. Which of the above statements is/are correct?
  A)
  I and III                  done clear
  B)
  Only II done clear
  C)
  III alone                  done clear
  D)
  II and III       done clear
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• question_answer146)
  Match column I with column II and select the correct answer using the code given below the columns:        

  Column I	Column II
  (A) The ratio of 3.5 kg to 280 gm is	(p) 10.20
  (B) The compound ratio of  3:4,8:15 and 25:28 is	(q) 0.05
  (C) 0.35% of a number is equivalent to multiplying it by the number	(r) 5:14
  (D) 20% of 30% of 20% of Rs. 850 is	(s) 25:2
  (E) Half of 1 percent written  as a decimal is	(t) 0.0035

  A)
   \[(A)\to p,(B)\to q,(C)\to r,(D)\to t,(E)\to q\] done clear
  B)
   \[(A)\to s,(B)\to r,(C)\to p,(D)\to t,(E)\to q\] done clear
  C)
   \[(A)\to r,(B)\to s,(C)\to t,(D)\to p,(E)\to q\] done clear
  D)
   \[(A)\to s,(B)\to r,(C)\to t,(D)\to p,(E)\to q\]  done clear
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• question_answer147)
  DIRECTION: Following questions consist of two statements, one labelled as the ?Assertion (A)? and the other as ?Reason (R)?. You are to examine these two statement carefully and select the answer to these items using the code given below. Assertion (A): If ?d? is x% more than ?b? and ?b? is y% less than 'a'. Then the relation between x and y is \[{{n}_{1}}+{{n}_{2}}+.....{{n}_{k}}\] Reason (R): If ?a? exceeds 'b? by P % then 'b? is short of 'a' by \[V={{V}_{0}}{{\left( 1-\frac{{{R}_{1}}}{100} \right)}^{{{n}_{1}}}}.{{\left( 1-\frac{{{R}_{2}}}{100} \right)}^{{{n}_{2}}}}....{{\left( 1-\frac{{{R}_{k}}}{100} \right)}^{{{n}_{k}}}}\]
  A)
  Both A and R are individually true and R is the correct explanation of A. done clear
  B)
  Both A and R are individually true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false done clear
  D)
  A is false but R is true. done clear
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• question_answer148)
  DIRECTION: Following questions consist of two statements, one labelled as the ?Assertion (A)? and the other as ?Reason (R)?. You are to examine these two statement carefully and select the answer to these items using the code given below. Assertion (A): The numbers 4, 6 and 9 are in continued proportion. Reason (R): The numbers 2, 4, 6 are also in continued proportion.
  A)
  Both A and R are individually true and R is the correct explanation of A: done clear
  B)
  Both A and R are individually true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false done clear
  D)
  A is false but R is true. done clear
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• question_answer149)
  DIRECTION: Following questions consist of two statements, one labelled as the ?Assertion (A)? and the other as ?Reason (R)?. You are to examine these two statement carefully and select the answer to these items using the code given below. Assertion (A): An article is sold at Rs.1425 at a loss of 5%. Its C.P is Rs.1500. Reason (R): If the shopkeeper has to make a 10% profit in question given in statement 1 then the S.P should be Rs.6150.
  A)
  Both A and R are individually true and R is the correct explanation of A: done clear
  B)
  Both A and R are individually true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false done clear
  D)
  A is false but R is true. done clear
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• question_answer150)
  DIRECTIONS: Reade the following passage and answer the questions that follow. PASSAGE - 1 If \[=P{{\left( 1+\frac{R}{100} \right)}^{n}}\] is the value of an article at certain time which increases at the rate of \[=\frac{R}{{{\left( 1+\frac{R}{100} \right)}^{n}}}\]for first \[{{R}_{1}}%\]years and decreases at the rate of \[{{R}_{2}}%\] for next \[=P\left( 1+\frac{{{R}_{1}}}{100} \right)\times \left( 1+\frac{{{R}_{2}}}{100} \right).\] years, then the value of the article V at the end of \[=P{{\left( 1-\frac{R}{100} \right)}^{n}}.\] years is given by       \[=\frac{P}{{{\left( 1-\frac{R}{100} \right)}^{n}}}\] The production of an article of a company in 2002 was 10000. Due to increase in demand, the company increased its production by 20% in the next 2 years. After 2 years due to decrease in the demand, the company decreased its production by 10% in the next year, then the production after 3 years is
  A)
  12950                    done clear
  B)
  12000 done clear
  C)
  12900                    done clear
  D)
  12960 done clear
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• question_answer151)
  DIRECTIONS: Reade the following passage and answer the questions that follow. PASSAGE - 1 If \[=P{{\left( 1+\frac{R}{100} \right)}^{n}}\] is the value of an article at certain time which increases at the rate of \[=\frac{R}{{{\left( 1+\frac{R}{100} \right)}^{n}}}\]for first \[{{R}_{1}}%\]years and decreases at the rate of \[{{R}_{2}}%\] for next \[=P\left( 1+\frac{{{R}_{1}}}{100} \right)\times \left( 1+\frac{{{R}_{2}}}{100} \right).\] years, then the value of the article V at the end of \[=P{{\left( 1-\frac{R}{100} \right)}^{n}}.\] years is given by       \[=\frac{P}{{{\left( 1-\frac{R}{100} \right)}^{n}}}\] Population of Chhapra district was 200000 on the last day of the year 2005. During next year is increased by 5% but due to an epidemic it decreased by 2% in the following year, then the population at the end of the year 2007 is
  A)
  205000                  done clear
  B)
  205800                 done clear
  C)
  206000                  done clear
  D)
  205700        done clear
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• question_answer152)
  DIRECTIONS: Reade the following passage and answer the questions that follow. PASSAGE - 1 If \[=P{{\left( 1+\frac{R}{100} \right)}^{n}}\] is the value of an article at certain time which increases at the rate of \[=\frac{R}{{{\left( 1+\frac{R}{100} \right)}^{n}}}\]for first \[{{R}_{1}}%\]years and decreases at the rate of \[{{R}_{2}}%\] for next \[=P\left( 1+\frac{{{R}_{1}}}{100} \right)\times \left( 1+\frac{{{R}_{2}}}{100} \right).\] years, then the value of the article V at the end of \[=P{{\left( 1-\frac{R}{100} \right)}^{n}}.\] years is given by       \[=\frac{P}{{{\left( 1-\frac{R}{100} \right)}^{n}}}\] Sandeep started a factory with an initial investment of Rs.500000. In the next year, he incurred a loss of 20%. However, during the second year, he earned a profit of 10% and in the third year he earned a profit of 15%, then his net profit for the entire period of three years is                       
  A)
  Rs.5000                 done clear
  B)
  Rs.6000 done clear
  C)
  Rs.50000              done clear
  D)
  Rs.60000 done clear
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• question_answer153)
  DIRECTIONS: Reade the following passage and answer the questions that follow. PASSAGE - 1 If \[=P{{\left( 1+\frac{R}{100} \right)}^{n}}\] is the value of an article at certain time which increases at the rate of \[=\frac{R}{{{\left( 1+\frac{R}{100} \right)}^{n}}}\]for first \[{{R}_{1}}%\]years and decreases at the rate of \[{{R}_{2}}%\] for next \[=P\left( 1+\frac{{{R}_{1}}}{100} \right)\times \left( 1+\frac{{{R}_{2}}}{100} \right).\] years, then the value of the article V at the end of \[=P{{\left( 1-\frac{R}{100} \right)}^{n}}.\] years is given by       \[=\frac{P}{{{\left( 1-\frac{R}{100} \right)}^{n}}}\] Consider the following statements (i) If two quantities varies directly with each other, then their product is constant,                                        (ii) If two quantities varies inversely with each other, then their ratio is constant. Which of the statements given above is/are correct
  A)
  only (i)       done clear
  B)
  only (ii) done clear
  C)
  both                      done clear
  D)
  none done clear
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• question_answer154)
  DIRECTIONS: Reade the following passage and answer the questions that follow. PASSAGE - 1 If \[=P{{\left( 1+\frac{R}{100} \right)}^{n}}\] is the value of an article at certain time which increases at the rate of \[=\frac{R}{{{\left( 1+\frac{R}{100} \right)}^{n}}}\]for first \[{{R}_{1}}%\]years and decreases at the rate of \[{{R}_{2}}%\] for next \[=P\left( 1+\frac{{{R}_{1}}}{100} \right)\times \left( 1+\frac{{{R}_{2}}}{100} \right).\] years, then the value of the article V at the end of \[=P{{\left( 1-\frac{R}{100} \right)}^{n}}.\] years is given by       \[=\frac{P}{{{\left( 1-\frac{R}{100} \right)}^{n}}}\] Consider the following statements (i) If P be the population of a city and R be the growth rate, then. Population after n \[\frac{a}{b}=K\] (ii) If P is the population of a city and R be the decay rate, then population after n years \[{{a}_{1}}\] Which of the statements(s) given above is/are correct?             
  A)
  Only (i)                  done clear
  B)
  Only (ii)                           done clear
  C)
  Both (i) and (ii)                  done clear
  D)
  Neither (i) nor (ii)     done clear
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