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AL/PIPES AND CISTERN 001

  1. Two pipes A and B can fill a tank in 40 Min and 60 Min respectively. If both the pipes are used together, then how long will it take to fill the tank?
  2. A water tank is 2/5 in full pipe A can fill a tank in 20 minutes and pipe B can empty it in 12 minutes. If both the pipes are open. How long will it take to empty the tank completely?
  3. Pipe A and B can fill a tank in 10 hours and 12 hours respectively. Pipe C can empty it in 20 hours. If all the three pipes are opened together. Then the tank will be filled in ?
  4. Bucket A has twice the capacity as bucket B. If it takes 30 turns for bucket A to fill the empty drum, how many turns will take for both buckets A and B using together to fill the empty drum?
  5. 12 buckets of water fill a tank when the capacity of each bucket is 13.5 Liters. How many buckets will be needed to fill the same tank. If the capacity of each bucket is 9 liters.
  6. Two pipes A and B can fill a cistern in 35 min and 50 min respectively. When both pipes are opened, the cistern will be filled in 28 minutes. If the pipe B is turned off after?
  7. Two pipes can fill a cistern in 6 min and 7 min respectively. Both the pipes are opened alternatively for 1 minute each. In what time will they fill the cistern?
  8. An electric pump can fill a tank in 3 hours. Because of a leak at the bottom of the tank, it took 3 ½ hours to fill the tank. If the tank is full, how much time will it take to empty it
  9. A cistern has two taps which fill it in 12 min and 15 min respectively. There is also waste pipe in the cistern. When all the three are opened, the empty cistern is full in 20 min. How long with the waste pipe take to empty the full cister?
  10. Three pipes A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is opened all the time and B and C are opened for one hour each alternately the tank will be full in
  11. Two taps A and B working separately can fill a tank in 9 and 12 hours respectively. If they open on alternate hours beginning with A in how many hours will the tank be full
  12. Pipe A can fill a tank in 20 hours while pipe B alone can fill it in 30 hours and C can empty the full tank in 40 hours. If all the pipes are opened together half the tank will be filled in
  13. A pipe can fill a cistern in 12 min and another fill it in 15 min but a third pipe can empty it in 6 min. The first two are kept open for 6 min in the beginning and then the third pipe is also opened. In what time is the cistern is emptied
  14. Two pipes can fill a cistern in 14 hours and 16 hours respectively. The pipes are opened simultaneously and it is found that due to leak in the bottom it took 32 min more to fill the cistern. When the cistern is full. In what time will the leak empty it?
  15. 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
  16. Pipe A can fill a tank in 15 min and pipe B can drain 40 liter/min. If both the pipes are opened together the cistern is full in 45 min. Find the capacity of cistern
  17. Two pipes A and B can fill a tank in 36 min and 45 min respectively. A water pipe C can empty the tank in 30 min. First A and B are opened. After 7 min C is also opened. In how much time, the tank is full
  18. If two pipes function simultaneously, the reservoir will be filled in 12 hours one pipe fills the reservoir 10 hours faster than the other. How many hours does it take the second pipe to fill the cistern
  19. Two pipes M and N can fill a tank in 8 1/3 min and 12 ½ min respectively and an exhaust pipe can drain 162 litre/min. If the tank is full all the three pipes are opened then tank will be empty in 4 min. Then the capacity of tank will be?
  20. A tank has four pipes. The first three pipe can be filled the tank in 12 min, and the second, third and the fourth pipe can be filled the same tank in 15 min and the first and the fourth pipe can filled in 20 min. Hoe much time A will take to fill up the tank (in min)
  21. 12 pumps working 6 hours a day can empty a completely filled reservoir in 15 days. How many such pumps working 9 hours a day will empty the same reservoir in 12 day
  22. A pipe can empty a tank in 40 minutes. A second pipe with diameter twice as much as that of the first is also attached with the tank to empty it. The two pipe together can empty the tank in?
  23. A cistern is provided with two pipes A and B. A can fill it in 20 min and B can empty it in 30 min. If A and B kept open alternately for one minute, each how soon will the cistern be filled
  24. Two pipes X and Y can fill a cistern in 24 minutes and 32 minutes respectively. If both the pipes are opened together, then after how much time should y be closed so that the tank is full in 18 min.
  25. A tank is filled with 8 pipes, some of them that fill the tank and others that are water pipe meant to empty the tank. Each of the pipes that fill the tank can fill it in 8 hours, while each of those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full it will take exactly 6 hours for the tank to empty. How many of these are fill pipes?





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