pipes-and-cisterns

Pipes and Cisterns

Pipes and Cisterns: Cistern meaning, Pipes and Cisterns Questions, Solved Problems

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Online Aptitude Questions with Answers on Pipes and Cisterns

Q51. **A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?**

  1.  20 hrs
  2.  25 hrs
  3.  35 hrs
  4.  34 hrs

Solution : 35 hrs
Q52. **A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is?**

  1.  6 hrs
  2.  10 hrs
  3.  15 hrs
  4.  30 hrs

Solution : 15 hrs

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Q53. **Two pipes A and B can fill a tank in 15 min and 20 min respectively. Both the pipes are opened together but after 4 min, pipe A is turned off. What is the total time required to fill the tank?**

  1.  10 min 20 sec
  2.  11 min 45 sec
  3.  12 min 30 sec
  4.  14 min 40 sec

Solution : 14 min 40 sec
Q54. **A large tanker can be filled by two pipes A and B in 60 and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?**

  1.  15 min
  2.  20 min
  3.  27.5 min
  4.  30 min

Solution : 30 min

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Q55. **Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full is?**

  1.  6 hrs
  2.  6 2/3 hrs
  3.  7 hrs
  4.  7 1/2 hrs

Solution : 7 hrs
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