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  4. Quantitative Aptitude
  5. Pipes & Cisterns

Railways Quantitative Aptitude Pipes & Cisterns Sample Paper Pipes and Cisterns Sample Test Paper-11

  • question_answer
    Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in :

    A)  \[1\frac{13}{17}\] Hours

    B)  \[2\frac{8}{11}\]Hours

    C)  \[3\frac{9}{17}\] Hours 

    D)  \[4\frac{1}{2}\] Hours

    Correct Answer: C

    Solution :

    [c] Net part filled in 1 hour\[=\left( \frac{1}{5}+\frac{1}{6}-\frac{1}{12} \right)=\frac{17}{60}.\] \[\therefore \] The tank will be full in \[\frac{60}{17}\] hrs i.e., \[3\frac{9}{17}\] hrs.


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