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CLAT CLAT Solved Paper-2011

  • question_answer
    If the length and height of a brick increases by 10% each respectively and the breadth reduces by 20%, what is the percentage change in the volume of the brick?

    A)  28 %                          

    B)  30 %

    C)  32 %                          

    D)  36 %

    Correct Answer: C

    Solution :

    Ans.   Let previous volume \[=1\times 1\times 1=1\]             Then, present volume \[=1.1\times 1.1\times 0.8=0.968\]             Change = 0.032             \[\therefore \] Percentage change \[=\frac{0.032\times 100}{1}=32%\]


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