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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-9

  • question_answer
    A cistern normally takes 10 hours to be filled by a tap. But because of a leak, it takes 2 hours more. In how many hours will the leak empty a full cistern?

    A) 45                                

    B) 48

    C) 30                                

    D) 60

    Correct Answer: D

    Solution :

    Part of the tank filled by pipe in 1 hour \[=\frac{1}{10}\] With leakage part filled in 1 hour \[=\frac{1}{12}\] \[\therefore \] Part emptied in 1 hour by leakage \[=\frac{1}{10}-\frac{1}{12}=\frac{6-5}{60}=\frac{1}{60}\] \[\therefore \] Required time = 60 hours


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