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Multiple Choice Questions

If the length of the rectangle is increased by 20 by what percent should the width be reduced to mai...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    If the length of the rectangle is increased by 20%, by what percent should the width be reduced to maintain the same area?

    13.37

    Incorrect Answer

    16.67

    Correct Answer

    21.33

    Incorrect Answer

    33.33

    Incorrect Answer
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    Explanation:

    Answer & Explanation
    Answer – 16.67
    Explanation :
    let length = 100 and breadth = 100
    now new length = 120 and let breadth = b
    so, 100*100 = 120*b
    b = 250/3, so % decrease = 100 – 250/3 = 50/3 = 16.67%

    By: MIRZA SADDAM HUSSAIN
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