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    Question

    A number is first increased by 80%, then increased by 50%

    and then decreased by 50%. If the resultant number is 360, then find the original number.
    A 265 Correct Answer Incorrect Answer
    B 267 Correct Answer Incorrect Answer
    C 325 Correct Answer Incorrect Answer
    D 445 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the original number be '100x'.

    ATQ;

    100x Ă— 1.8 Ă— 1.5 Ă— 0.5 = 360

    Or, 135x = 360

    So, x = 2.67

    So, original number = 2.67 Ă— 100 = 267

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