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    Question

    A and B can do a work together in 18 days. A is three

    times as efficient as B. In how many days can B alone complete the work?
    A 72 days Correct Answer Incorrect Answer
    B 64 days Correct Answer Incorrect Answer
    C 60 days Correct Answer Incorrect Answer
    D 54 days Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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