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    Question

    The efficiency of A is twice that of B. Both working

    together can finish a piece of work in 18 days. In how many days B alone can finish the work?
    A 27 Correct Answer Incorrect Answer
    B 63 Correct Answer Incorrect Answer
    C 45 Correct Answer Incorrect Answer
    D 54 Correct Answer Incorrect Answer

    Solution

    A = 2B Therefore, A/B = 2/1 Total work done = (2 + 1) × 18 = 54 Therefore, B can complete the work in = 54/1 = 54 days

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