2. Sample Papers
  3. Railways
  4. Quantitative Aptitude
  5. Pipes & Cisterns

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

  • question_answer
    Two pipes A and B can fill a tank in 24 minutes and 32 minutes respectively. If both the pipes are opened simultaneously, after how much time B should be closed so that the tank is full in 18 minutes?

    A)   8 min 

    B)  9 min

    C)  12 min

    D)  10 min.

    Correct Answer: A

    Solution :

    [a] \[\frac{18}{24}+\frac{18-x}{32}=1\] \[\frac{18-x}{32}=\frac{1}{4}\] x = 10 min \[\therefore \] B close before 18 ? 10 = 8 min.


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