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Pipes and Cisterns

Pipes and Cisterns aptitude questions and answers for competitive exams. Pipes and Cisterns MCQs for test preparation and entry tests.

Pipe A can fill a tank in 16 minutes and pipe B cam empty it in 24 minutes. If both the pipes are opened together after how many minutes should pipe B be closed, so that the tank is filled in 30 minutes ?

November 30, 2023 – by admin 0

A. 24
B. 23
C. 20
D. None of these

Pipe A can fill a tank in 6 hours. Due to a leak at the bottom, it takes 9 hours for the pipe A to fill the tank. In what time can the leak alone empty the full tank ?

November 30, 2023 – by admin 0

A. 17 hours
B. 18 hours
C. 16 hours
D. 15 hours

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

November 30, 2023 – by admin 0

A. 32 hours
B. 36 hours
C. 24 hours
D. 28 hours

Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank ?

November 30, 2023 – by admin 0

A. 25 min
B. 50 min
C. 12 min
D. 15 min

A tap can fill a tank in 6 hours. After half the tank is filled three more similar taps are opened. What is the total time taken to fill the tank completely ?

November 30, 2023 – by admin 0

A. 4 hrs
B.  4 hrs 15 min
C. 3 hrs 45 min
D. 3 hrs 15 min

A water tank is two-fifth full. Pipe A can fill a tank in 10 minutes and pipe B can empty it in 6 minutes. If both the pipes are open, how long will it take to empty or fill the tank completely ?

November 30, 2023 – by admin 0

A.  9 min. to empty
B.  9 min. to full
C. 6 min. to empty
D. 6 min. to full

Pipe A can fill a tank in 5 hours, pipe B in 10 hours and pipe C in 30 hours. If all the pipes are open, in how many hours will the tank be filled ?

November 30, 2023 – by admin 0

A. 3
B. 3.5
C. 2.5
D. 2

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 ?

November 30, 2023 – by admin 0

A. 2 8/11 hours
B. 4 1/2 hours
C. 1 13/17 hours
D. 3 9/17 hours

A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 1/3 hours to fill the tank. The leak can drain all the water of the tank in ?

November 30, 2023 – by admin 0

A. 7 hrs
B. 8 hrs
C. 14 hrs
D. 4 1/3 hrs

One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill tank in 36 min, then the slower pipe alone will be able to fill the tank in ?

November 30, 2023 – by admin 0

A.  144 min
B. 192 min
C. 81 min
D. 108 min

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