pipes and cisterns questions answers mcq of quantitative aptitude are useful for it officer bank exam, ssc, ibps and other competitive exam preparation.
1. A pipe fills a tank in 3 hours, whereas an outlet can empty the filled tank completely in 12 hours. In what time will the tank be filled, if both the pipe and the outlet are opened simultaneously?
(1) 2 hours
(2) 4 hours
(3) 3 hours
(4) 1 hours
2. A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 hours to fill the tank. The leak can drain all the water of the tank in -
(1) 14 hours
(2) 14.5 hours
(3) 15 hours
(4) 18 hours
3. 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 -
(1) 14 hours
(2) 14.5 hours
(3) 15 hours
(4) 18 hours
4. 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 -
(1) 5
(2) 10
(3) 15
(4) 16
5. Two taps can separately fill a cistern 10 minutes and 15 minutes respectively and when the waste pipe is open, they can together fill it in 18 minutes. The waste pipe can empty the full cistern in? (in mint )
(1) 9
(2) 8
(3) 10
(4) 14
6. A pipe can fill a cistern in 20 minutes whereas the cistern when fill can be emptied by a leak in 28 minutes. When both pipes are opened, find when the cistern will be full?
(1) 71 minutes
(2) 69 minutes
(3) 89 minutes
(4) 70 minutes
7. One pipe can fill a tank 6 times as fast as another pipe. If together the two pipes can fill the tank in 22 minutes, then the slower pipe alone will be able to fill the tank in:
(1) 148
(2) 114
(3) 174
(4) 154
8. Two pipes A and B can fill a tank in 9 hours and 3 hours respectively. If they are opened on alternate hours and if pipe A is opened first, in how many hours will the tank be full?
(1) 4 hr
(2) 5 hr
(3) 6 hr
(4) 7 hr
9. Two pipes A & B can fill a tank in 5 min & 10 min respectively. Both the pipes are opened together but after 2 min, pipe A is turned off. What is the total time required to fill the tank?
(1) 2 minutes
(2) 6 minutes
(3) 10 minutes
(4) 15 minutes
10. Three pipes A, B and C can fill a cistern in 6 hours. After working at it together for 2 hours, C is closed and A and B can fillit in 7 hours. The time taken by C alone to fill the cistern is
(1) 14 hrs
(2) 10 hrs
(3) 5 hrs
(4) 2 hrs
1-2, 2-1, 3-1, 4-3, 5-1,
6-4, 7-4, 8-2, 9-2, 10- 1
1. A pipe fills a tank in 3 hours, whereas an outlet can empty the filled tank completely in 12 hours. In what time will the tank be filled, if both the pipe and the outlet are opened simultaneously?
(1) 2 hours
(2) 4 hours
(3) 3 hours
(4) 1 hours
2. A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 hours to fill the tank. The leak can drain all the water of the tank in -
(1) 14 hours
(2) 14.5 hours
(3) 15 hours
(4) 18 hours
3. 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 -
(1) 14 hours
(2) 14.5 hours
(3) 15 hours
(4) 18 hours
4. 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 -
(1) 5
(2) 10
(3) 15
(4) 16
5. Two taps can separately fill a cistern 10 minutes and 15 minutes respectively and when the waste pipe is open, they can together fill it in 18 minutes. The waste pipe can empty the full cistern in? (in mint )
(1) 9
(2) 8
(3) 10
(4) 14
6. A pipe can fill a cistern in 20 minutes whereas the cistern when fill can be emptied by a leak in 28 minutes. When both pipes are opened, find when the cistern will be full?
(1) 71 minutes
(2) 69 minutes
(3) 89 minutes
(4) 70 minutes
7. One pipe can fill a tank 6 times as fast as another pipe. If together the two pipes can fill the tank in 22 minutes, then the slower pipe alone will be able to fill the tank in:
(1) 148
(2) 114
(3) 174
(4) 154
8. Two pipes A and B can fill a tank in 9 hours and 3 hours respectively. If they are opened on alternate hours and if pipe A is opened first, in how many hours will the tank be full?
(1) 4 hr
(2) 5 hr
(3) 6 hr
(4) 7 hr
9. Two pipes A & B can fill a tank in 5 min & 10 min respectively. Both the pipes are opened together but after 2 min, pipe A is turned off. What is the total time required to fill the tank?
(1) 2 minutes
(2) 6 minutes
(3) 10 minutes
(4) 15 minutes
10. Three pipes A, B and C can fill a cistern in 6 hours. After working at it together for 2 hours, C is closed and A and B can fillit in 7 hours. The time taken by C alone to fill the cistern is
(1) 14 hrs
(2) 10 hrs
(3) 5 hrs
(4) 2 hrs
Ans:-
1-2, 2-1, 3-1, 4-3, 5-1,
6-4, 7-4, 8-2, 9-2, 10- 1
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