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    Question

    (x + 7) workers finish 60% of a job in 9 days working 4

    hours/day. The remaining work is done by (x + 3) workers in 12 days working 3 hours/day. Find x.
    A 16 Correct Answer Incorrect Answer
    B 5 Correct Answer Incorrect Answer
    C 3 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer
    E 10 Correct Answer Incorrect Answer

    Solution

    According to the question,
    {(x + 7) × 9 × 4}/0.60 = {(x + 3) × 12 × 3}/0.40
    Or, 2x + 14 = 3x + 9
    Or, x = 5
    Hence, value of x is 5.

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