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7th Class Mathematics Comparing Quantities Question Bank Comparing Quantities

  • question_answer
    If the ratio of the cost Price and selling Price of an article is 5 : 6, the gain percent is

    A)  \[20%\]                                  

    B)  \[30%\]

    C)  \[25%\]                      

    D)  \[33\frac{1}{3}%\]

    Correct Answer: D

    Solution :

         \[\frac{C.P}{S.P}=\frac{5}{6}\Rightarrow S.P.=\frac{6}{5}CP.\] Gain%\[=\frac{S.P.-C.P.}{C.P.}\] \[=\frac{\left( \frac{6}{5}-1 \right)C.P.}{C.P.}\times 1.00\] \[=\frac{1}{6}\times 100=33\frac{1}{3}%\]


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