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    Question

    A certain number of men can complete a work in 50 days.

    If 10 more men are added, the work can be completed in 40 days. Find the original number of men.
    A 30 Correct Answer Incorrect Answer
    B 49 Correct Answer Incorrect Answer
    C 40 Correct Answer Incorrect Answer
    D None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Let the original number of men be x. x men × 50 days = (x + 10) men × 40 days Solving for x, we get: 50x = 40(x + 10) 50x = 40x + 400 10x = 400 x = 40

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