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SSC Sample Paper SSC CGL - Sample Paper-1

  • question_answer
    Two pipes can fill a cistern in 3 h and 4 h respectively and a waste pipe can empty it in 2 h. If all the three pipes are kept open, then the cistern will be filled in

    A)  5 h                              

    B)  8 h

    C)  10 h                            

    D)  12 h

    Correct Answer: D

    Solution :

    Part of the cistern filled in 1 \[h=\frac{1}{3}+\frac{1}{4}-\frac{1}{2}\] \[=\frac{4+3-6}{12}=\frac{1}{12}\] Hence, the cistern will be filled in 12 h.


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