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    Question

    A can do a piece of work in 10 days and B can do it in

    12 days. They work together for 3 days. Then B leaves and A alone continues. 2 days after that C joins and the work is completed in 2 days more. In how many days can C do it, if he works alone ?
    A 30 days Correct Answer Incorrect Answer
    B 50 days Correct Answer Incorrect Answer
    C 40 days Correct Answer Incorrect Answer
    D 60 days Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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