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Discussion :: Pipes and Cistern

  1. A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 \(\frac { 1 } { 3}\) hours to fill the tank. The leak can drain all the water of the tank in:
    2. A.

    4\(\frac { 1 } { 3}\)hours
    B.

    7 hours
    C.

    8 hours
    D.

    14 hours

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    Answer : Option D

    Explanation :

    Work done by the leak in 1 hour = [\(\frac { 1 } { 2 } \) - \(\frac { 3} { 7 } ]\) = \(\frac { 1 } {14} \)

     Leak will empty the tank in 14 hrs.

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