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    Question

    A quantity is first increased by 60% and then decreased

    by 25%. Calculate the overall percentage increase or decrease.
    A 24% increase Correct Answer Incorrect Answer
    B 10% decrease Correct Answer Incorrect Answer
    C 20% increase Correct Answer Incorrect Answer
    D 12% decrease Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the quantity be 100b

    Final quantity = 1.60 × 0.75 × 100b = 120b

    Overall percentage change = [(120b - 100b) ÷ 100b] × 100 = 20% increase

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