Pipe and Cistern Questions for SSC and Bank Exams

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Pipe and Cistern Questions

Pipe and Cistern questions for Competitive exams


9. 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?

(A) 15 hrs

(B) 25 hrs

(C) 35 hrs

(D)45

(E) None of these


Ans .   C


10. A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time 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:

(A) 6 hrs

(B) 12 hrs

(C) 15 hrs

(D) 30 hrs


Ans .   C


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

(A) 10 min 20 sec

(B) 10 min 45 sec

(C) 14 min 30 sec

(D) 14 min 40 sec


Ans .   D


12. A large tanker can be filled by two pipes A and B in 60 minutes 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 it together for the other half?

(A) 15 min

(B) 20 min

(C) 27.5 min

(D) 30 min


Ans .   D


13. 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 in:

(A) 6 hrs

(B)  hrs

(C) 5

(D)


Ans .   C


14. Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:

(A) 70 gallons

(B) 90 gallons

(C) 120 gallons

(D) 150 gallons


Ans .   C

15. Two pipes A and B can fill a cistern in  minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the pipe B is turned off after:

(A) 6min

(B) 9 min

(C) 12 min

(D) 15 min


Ans .   B


16. Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill the remaining part in 7 hours. The number of hours taken by C alone to fill the tank is:

(A) 12

(B) 18

(C) 14

(D) 16


Ans .   C

If you face any problems while solving Pipe and Cistern questions, ask me in the comment section. Visit next page for more Pipe and Cistern problems.

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    Providing knowledgable questions of Reasoning and Aptitude for the competitive exams.

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