Question

    A can do a work in 20 days and B in 25 days. If they

    work together on it for 5 days, the fraction of remaining work is ________. 
    A 1/20. Correct Answer Incorrect Answer
    B 21/28 Correct Answer Incorrect Answer
    C 21/25 Correct Answer Incorrect Answer
    D 21/29 Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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