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SSC Sample Paper SSC CGL - Sample Paper-23

  • question_answer
    A reduction of 20% in the price of rice enable a person to buy 3.5 kg more rice for Rs. 385. The original price of rice per kg is

    A) Rs. 20              

    B) Rs. 22.50

    C) Rs. 25              

    D) Rs. 27.50

    Correct Answer: D

    Solution :

    If the price of any commodity is reduced by r% due to this any person can by A kg more in Rs. x then. Original value of commodity             \[=Rs.\frac{rx}{(100-r)A}\text{per}\,\,\text{kg}\] (Here, \[r=20%,\text{ }\] \[x=Rs.\,385,\] and\[A=3.5\,kg\]) \[\therefore \]      Original price of rice \[=\frac{20\times 385}{(100-20)\times 3.5}\]             \[=\frac{20\times 385}{80\times 3.5}=Rs.\,27.50\,\text{per}\,\,\text{kg}\]


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