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    Question

    A contractor undertook to do a work in 60 days and

    employed 30 men to do it. After 45 days he found that only `3/5` th of the work was done. How many more men must be employed so that the work may be finished in time?
    A 35 Correct Answer Incorrect Answer
    B 60 Correct Answer Incorrect Answer
    C 48 Correct Answer Incorrect Answer
    D 30 Correct Answer Incorrect Answer

    Solution

    Applying chain rule, (45 x 30)/(3/5) = (M2 x 15)/(2/5) MтВВ = (5 x 45 x 30 x2)/(15 x 5 x 3) = 60 men Required men = 60 – 30 = 30 men

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