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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-19

  • question_answer
    After getting two successive discounts, a shirt with a list price of Rs. 150 is available at Rs. 105. If the second discount is 12.5%, find the first discount.

    A)  18%                

    B)  20%

    C)  16%    

    D)  19%

    Correct Answer: B

    Solution :

    First discount = x%, then \[150\times \frac{100-x}{100}\times \frac{100-12.5}{100}=105\] \[\Rightarrow \]   \[\,(100-x)(87.5)=\frac{105\times 100\times 100}{150}\] \[\Rightarrow \]               \[100-x=\frac{7\times 10\times 100}{87.5}\] \[\therefore \]                  \[x=100-80=20%\]


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