Pipes and Cistern
Pipes and Cistern - Important Points
| 1. | Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are opened together, the tank will be filled in: |
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A. 10 min
B. 12 min
C. 14 min
D. 16 min
View Answer Discuss Work SpaceAnswer: option b
Explanation:
| 2. | Two pipes A and B can fill a cistern in 20 and 30 minutes respectively, and a third pipe C can empty it in 40 minutes. How long will it take to fill the cistern if all the three pipes are opened at the same time? |
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A. 19 1/7 min
B. 18 1/7 min
C. 17 1/7 min
D. 16 1/7 min
View Answer Discuss Work SpaceAnswer: option c
Explanation:
| 3. | A pump can fill a tank in 2 hours but due to a leak, it took 2 1/3 hours to fill the tank. The leak can empty the tank in: |
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A. 13 1/3 hours
B. 10 hours
C. 12 hours
D. 14 hours
View Answer Discuss Work SpaceAnswer: option d
Explanation:
| 4. | 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 ? |
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A. 6 min. to empty
B. 6 min. to fill
C. 9 min. to empty
D. 9 min. to fill
View Answer Discuss Work SpaceAnswer: option a
Explanation:
| 5. | Two pipes A and B can fill a cistern in 12 minutes and 15 minutes respectively while a third pipe C can empty the filled tank in 6 minutes. Pipe A and pipe B are kept open for 5 minutes in the beginning and then pipe C is also opened. In what time the cistern will be emptied ? |
|---|
A. 30 min
B. 33 1/3 min
C. 40 min
D. 45 min
View Answer Discuss Work SpaceAnswer: option d
Explanation:
Pipes and Cistern Questions and Answers FAQ
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