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    Question

    The population of a town increased by 20% in the first

    year, decreased by 10% in the second year and again increased by 25% in the third year. If the population at the end of the third year is 27000, what was the initial population?
    A 55,000 Correct Answer Incorrect Answer
    B 23,450 Correct Answer Incorrect Answer
    C 20,000 Correct Answer Incorrect Answer
    D 18,550 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let initial population = x After first year = 1.2x After second year = 1.2x x 0.9 = 1.08x After third year = 1.08x x 1.25 = 1.35x Given, 1.35x = 27000 x = 20000 Hence, the correct answer is 20,000.

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