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    Question

    30 men can complete a work in 12 days. After 9 days, 15

    more men joined them. How many days will they now take to complete the remaining work?
    A 3(1/2) days Correct Answer Incorrect Answer
    B 3(1/3) days Correct Answer Incorrect Answer
    C 3 days Correct Answer Incorrect Answer
    D 2days Correct Answer Incorrect Answer

    Solution

    Let, the efficiency of a man = y ATQ- (30 x y x 9) + (45 x y x D) = 30 x y x 12 (45 x y x D) = 360y-270y 45Dy=90y D = 90y/45y D=2 days.

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