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    Question

    A can complete a piece of work in 20 days. B can

    complete the same work in 36 days. If A and B work together, then the number of days required to complete the work is:
    A 10(6/7) Correct Answer Incorrect Answer
    B 12(6/7) Correct Answer Incorrect Answer
    C 12(1/7) Correct Answer Incorrect Answer
    D 10(1/7) Correct Answer Incorrect Answer

    Solution

    AB 2036 180(T.W) 95Efficiency Total days in complete work=180/9+5 =180/14. =12(12/14) =12(6/7)days.

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