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SSC Sample Paper Mock Test-11 SSC CGL Tear-II Paper-1

  • question_answer
    The price of a certain item is increased by 15%. If a consumer wants to keep his expenditure on the item the same as before, how much per cent must be reduce his consumption on that item?

    A)  \[15%\]

    B)  \[13\frac{1}{23}%\]

    C)  \[16\frac{2}{3}%\]

    D)  \[10\frac{20}{23}%\]

    Correct Answer: B

    Solution :

    If the price of a commodity increase by R%, then reeducation in consumption, not to increase the expenditure\[\left( \frac{R}{100+R}\times 100 \right)%.\]
    \[=\frac{15}{100+15}\times 100\]
    \[=\frac{15}{115}\times 100\]
    \[=\frac{300}{23}=13\frac{1}{23}%\]


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