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    Question

    If 20 men or 12 boys can complete a job in 25 days, how

    long will it take for a team of 15 men and 18 boys to complete the same job? (Calculate approximate value)
    A 21 days Correct Answer Incorrect Answer
    B 18 days Correct Answer Incorrect Answer
    C 32 days Correct Answer Incorrect Answer
    D 11 days Correct Answer Incorrect Answer

    Solution

    According to the question,

    20M = 12B

    Or, 5M = 3B

    Therefore, (15M + 18B) = (9B + 18B) = 27B

    12 boys take 25 days to complete the work

    Therefore, time taken by 27 boys to complete the work = (12 × 25) / 27 = 11.11 days or 11 days

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