9th Class Mathematics Related to Competitive Exam Question Bank

done Arithmetic Total Questions - 10

• question_answer1)
  A housewife saved Rs. 2.5 in buying an item on sale. If she spent Rs.25 for the item, then approximately how much percent she saved in the transaction?
  A)
  9%        done clear
  B)
                     10% done clear
  C)
  11%                     done clear
  D)
        12% done clear
  E)
  None of these done clear
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• question_answer2)
  If x% of y is 100 and y% of z is 200, then find the relation x and z.
  A)
  Z = X                   done clear
  B)
         2Z = X done clear
  C)
  Z = 2X      done clear
  D)
        Z = 3X done clear
  E)
  None of these done clear
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• question_answer3)
  In an examination, 34% of the students failed in Mathematics and 42% failed in English. If 20% of the students failed in both the subjects, then find the of who passed in both the subjects.
  A)
  40%                    done clear
  B)
          42% done clear
  C)
  44%       done clear
  D)
        46% done clear
  E)
  None of these done clear
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• question_answer4)
  If \[x:y=1:3\], then find the value of \[\left( 7x+3y \right):\left( 2x+y \right)\].
  A)
  \[14:5\]                done clear
  B)
         \[15:5\] done clear
  C)
  \[16:5\]     done clear
  D)
         \[17:5\] done clear
  E)
  None of these done clear
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• question_answer5)
  In a mixture 60 litres, the ratio of milk and water \[2:1\]. If the this ratio is to be \[1:2\], then the quantity of water to be further added is:
  A)
  20 liters   done clear
  B)
                     30 liters done clear
  C)
  50 liters              done clear
  D)
         60 liters done clear
  E)
  None of these done clear
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• question_answer6)
  Salaries of Ravi and Sumit are in the ratio \[2:3\]. If the salary of each is   by Rs. 4000, the new ratio becomes \[40:57\]. What is Sumit present salary?
  A)
  Rs. 32000   done clear
  B)
                 Rs. 34000 done clear
  C)
  Rs. 38000    done clear
  D)
        Rs. 40000 done clear
  E)
  None of these done clear
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• question_answer7)
  If 40% of a number is equal to two-third of another number, then what is the ratio of first number to the second number?
  A)
  \[2:5\]                            done clear
  B)
  \[2:7\] done clear
  C)
  \[5:3\]        done clear
  D)
         \[5:7\] done clear
  E)
  None of these done clear
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• question_answer8)
  A tyre has two punctures. The first puncture alone would have made the tyre flat in 9 minutes and the second alone would have done it in 6 minutes. If air leaks out at a constant rate, then how long does it take both the punctures together to make it flat?
  A)
  \[3\frac{1}{5}\] min        done clear
  B)
         \[3\frac{2}{5}\] min done clear
  C)
  \[3\frac{3}{5}\] min     done clear
  D)
         \[3\frac{4}{5}\] min done clear
  E)
  None of these done clear
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• question_answer9)
  A can do a piece of work in 4 hours. A and C together can do it in just 2 hours, while B and C together need 3 hours to finish the same work. In how many hours B can complete the work?
  A)
  10 hours              done clear
  B)
        12 hours done clear
  C)
  16 hours              done clear
  D)
        18 hours done clear
  E)
  None of these done clear
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• question_answer10)
  Two fill pipes A and B can fill a cistern in 12 and 16 minutes respectively. Both fill pipes are opened together, but 4 minutes before the cistern is full, one pipe A is closed. How much time will the cistern take to fill?
  A)
  \[9\frac{1}{7}\] minutes       done clear
  B)
         \[3\frac{1}{3}\] minutes done clear
  C)
  5 minutes             done clear
  D)
         \[3\,\] minutes done clear
  E)
  None of these done clear
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