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    Question

    A number is first increased by 20% and then decreased by

    10%. If the final number is 540, find the original number.
    A 584 Correct Answer Incorrect Answer
    B 565 Correct Answer Incorrect Answer
    C 500 Correct Answer Incorrect Answer
    D 550 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let original number = x After 20% increase = 1.2x Then 10% decrease = 0.9 x 1.2x = 1.08x 1.08x = 540 x = 540/1.08 = 500

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