New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The population of a small town grows by 18% per year. If

    the population two years later is estimated to be 41,472, what is the population now?
    A 20,000 Correct Answer Incorrect Answer
    B 60,000 Correct Answer Incorrect Answer
    C 30,000 Correct Answer Incorrect Answer
    D 25,000 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let, the present population be ‘x’.

    ATQ,

    Future population = 1.18 × 1.18 × x = 41472

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

    So, x = 30,000

    Therefore, present population = x = 30,000

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