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    Question

    The length of a cuboid increases by 5%, its breadth

    decreases by 10% and its height increases by 25%. Find the percentage change in the volume.
    A 55.62% Correct Answer Incorrect Answer
    B 24.22% Correct Answer Incorrect Answer
    C 18.12% Correct Answer Incorrect Answer
    D 37.28% Correct Answer Incorrect Answer

    Solution

    ATQ, Let initial dimensions be l, b, h. Initial volume = lbh cubic units New volume = 1.05l ├Ч 0.9b ├Ч 1.25h = 1.18125lbh Required percentage change = {(1.18125lbh тАУ lbh)/lbh} ├Ч 100 = 18.12%

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