Pipe and Cistern Questions Practice Question and Answer
8 Q: Pipes A and B together can fill a tank in 16 hours, whereas pipe C alone can empty the full tank in 24 hours. A and B were opened together for 10 hours and then closed. Pipe C was then opened. The tank will now be emptied by C in:
706 06051c40fa01bc44789a9abd2
6051c40fa01bc44789a9abd2- 118 hoursfalse
- 214 hoursfalse
- 316 hoursfalse
- 415 hourstrue
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Answer : 4. "15 hours"
Q: A pipe can fill a tank in x hours and an another can empty it in y hours. In how many hours will they together fill it. If y>x?
686 060b60d12adafcb4fbcf369bf
60b60d12adafcb4fbcf369bf- 1$$ {xy\over y-x}{hrs}$$true
- 2$$ {y-x\over xy}{hrs}$$false
- 3$$ {2yx\over y-x}{\ hs}$$false
- 4Can’t be determinedfalse
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Answer : 1. "$$ {xy\over y-x}{hrs}$$"
Q: A cistern has 3 pipes A, B and C. A and B can fill it in 3 and 4 hours respectively, and C can empty it in 1 hour. If the pipes are opened at 3 p.m., 4 p.m. and 5 p.m. respectively on the same day, the cistern will be empty at-
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630359612876110d0951efd9- 17.12 p.m.true
- 27.15 p.m.false
- 37.10 p.m.false
- 47.18 p.m.false
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Answer : 1. "7.12 p.m."
Q: One filling pipe P is three times faster than another filling pipe Q, if P can fill tank in 24 hours, then what is the time taken to completely fill the tank if both the pipes are opened together?
623 062c3f5e931b6d20155fc54ee
62c3f5e931b6d20155fc54ee- 112 hoursfalse
- 218 hourstrue
- 316 hoursfalse
- 414 hoursfalse
- 5None of thesefalse
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Answer : 2. "18 hours"
Q: Two pipe A and B can fill a tank in 16 hrs and 12 hrs respectively. The capacity of the tank is 240 litres. Both the pipes are opened simultaneously and closed after 2 hrs. How much more water (In Liters) needed to fill the tank?
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62c6a0619ac8916f08cb8ee9- 1100false
- 2170true
- 370false
- 4190false
- 5None of thesefalse
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Answer : 2. "170"
Q: A tank can be filled by A in 60 minutes and emptied by B in 75 minutes. The tank is half filled and Ravi wants to fill the tank but opens B mistakenly and realizes after half hour and closed tap B. He then opens A and tank is completely filled in _______ minutes.
563 064e75543de1aa1b70fdef7a0
64e75543de1aa1b70fdef7a0- 148false
- 254true
- 350false
- 464false
- 5None of thesefalse
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Answer : 2. "54"
Q: A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was closed after 30 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in?
543 062d129446c73e80f8cdd9452
62d129446c73e80f8cdd9452- 145 minutesfalse
- 260 minutesfalse
- 375 minutesfalse
- 490 minutestrue
- 585 minutesfalse
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Answer : 4. "90 minutes"
Q: Pipes A and B can fill a tank in 12 minutes and 15 minutes, respectively. The tank when full can be emptied by pipe C in x minutes. When all the three pipes are opened simultaneously, the tank is full in 10 minutes. The value of x is:
542 064d20e2de0ce557496830b4f
64d20e2de0ce557496830b4f- 118false
- 215false
- 320true
- 424false
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