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8th Class Mathematics Comparing Quantities Question Bank Comparing Quantities

  • question_answer
    What will be the list price of an article which is sold for \[Rs.\,y\] after giving a discount of \[x%\]?

    A)  \[\frac{100\,y}{100-x}\]                               

    B)                         \[\frac{100\,y}{1-x}\] 

    C)                         \[\frac{100\,y}{1-(x/100)}\]                       

    D)                         \[\frac{100-x}{100-y}\]

    Correct Answer: A

    Solution :

    Let the list price be \[Rs.\,z\]. \[\therefore \]   \[(100-x)\,%\]  of  \[z=y\] \[\Rightarrow \]               \[\left( \frac{100-x}{100} \right)z=y\] \[\Rightarrow \]               \[z=\left( \frac{100\,y}{100-x} \right)\]


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