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    Question

    Pipes A and B can fill a tank in 6 hours and 15 hours,

    respectively. Pipe C is a drain pipe. When all the three pipes are opened together for 6 hours, then 65% of the tank is filled. Initially, pipes A and C are opened together for 8 hours and then C is closed and B is opened. Pipes A and B together will fill the remaining part of tank in _____ hours.
    A 2(6/7) Correct Answer Incorrect Answer
    B 3(1/3) Correct Answer Incorrect Answer
    C 3(2/3) Correct Answer Incorrect Answer
    D 2(3/7) Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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