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    Question

    A number is initially increased by 24% and subsequently

    reduced by 30%. Determine the overall percentage change in the number, indicating whether it is an increase or a decrease.
    A 12.6% increase Correct Answer Incorrect Answer
    B 13.2% increase Correct Answer Incorrect Answer
    C 10.8% increase Correct Answer Incorrect Answer
    D 12.6% decrease Correct Answer Incorrect Answer
    E 13.2% decrease Correct Answer Incorrect Answer

    Solution

    Let the number be '100n'. Final number = 1.24 X 0.7 X 100n = '86.8n' Therefore, net percentage decrease = [(100n - 86.8n) ÷ 100n] X 100 = (13.2n/100n) X 100 = 13.2%

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