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    Question

    Two pipes, X and Y, can individually fill a tank in 50

    minutes and 25 minutes respectively. If both pipes are opened simultaneously, after how much time should pipe X be closed so that the remaining part of the tank is filled in 10 minutes by pipe Y alone?
    A 22 min Correct Answer Incorrect Answer
    B 15 min Correct Answer Incorrect Answer
    C 25 min Correct Answer Incorrect Answer
    D 12 min Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, Both pipes are opened simultaneously. Let 'w' be the minutes after which pipe X is closed Pipe X should be closed after 10 minutes.

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