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    Question

    An amount is first boosted by 28% and then cut down by 40%.

    Find the overall percentage change from the original amount.
    A 23.2% decrease Correct Answer Incorrect Answer
    B 10.1% decrease Correct Answer Incorrect Answer
    C 21.5% increase Correct Answer Incorrect Answer
    D 12.5% increase Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the amount be 100b

    Final amount = 1.28 × 0.60 × 100b = 76.8b

    Overall percentage change = [(76.8b - 100b) ÷ 100b] × 100 = -23.2% or

    23.2% decrease

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