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    Question

    The total population of a town is 18000. The male

    population increases by 70 percent and female population increases by 40 percent. If the total population becomes 27000, then what were the initial number of females in the town?
    A 12000 Correct Answer Incorrect Answer
    B 6000 Correct Answer Incorrect Answer
    C 3000 Correct Answer Incorrect Answer
    D 15000 Correct Answer Incorrect Answer

    Solution

    ATQ, Let the initial numbers of females be f Then, number of males initially = 18000 - f According to the question, Increased population = 1.4f + 1.7(18000 - f) = 27000 ⇒ 30600 - 0.3f = 27000 ⇒ f = 12000 ∴ Initial number of females = 12000

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