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    Question

    The population of a city increases by 18% every year. If

    the population after 2 years will be 41,472, what is the present population?
    A 25028 Correct Answer Incorrect Answer
    B 23320 Correct Answer Incorrect Answer
    C 12530 Correct Answer Incorrect Answer
    D 29800 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let, the present population be ‘x’.

    ATQ,

    So, the population after 2 years = 1.18 × 1.18 × x = 41472

    Or, x = 41472 × (1/1.18) × (1/1.18)

    So, x = 29,800

    Therefore, present population of the city = x = 29,800

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