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    Question

    A and B can complete a piece of work in 120 days, B and

    C can complete it in 150 days, and A and C can complete it in 200 days. In how many days can B alone complete two-fifths of the same work?
    A 200 Correct Answer Incorrect Answer
    B 100 Correct Answer Incorrect Answer
    C 80 Correct Answer Incorrect Answer
    D 175 Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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