Pipe and Cistern (SSC)

Total Questions: 50

31. Pipes P and Q can completely fill a water tank in 10 hours and 15 hours, respectively. A pipe R can empty a tank filled completely with water in 12 hours. Initially, the tank is empty and only pipes P and Q are opened at 6 a.m. and pipe R is also opened at 9 a.m. By what time will the tank be completely filled? [SSC CGL 10/09/2024 (3rd Shift)]

Correct Answer: (d) 3 p.m.
Solution:


32. There are two pipes to fill a tank. Together, they can fill the tank in 15 minutes. If one pipe can fill the tank in one and a half times as fast as the other, the faster pipe alone can fill the tank in: [SSC CGL 11/09/2024 (1st Shift)]

Correct Answer: (b)
Solution:

33. Two pipes, A and B, can fill a tank in 10 minutes and 20 minutes, respectively. The pipe C can empty the tank in 30 minutes. All the three pipes are opened at a time in the beginning. However, pipe C is closed 2 minutes before the tank is filled. In what time, will the tank be full (in minutes)? [SSC CGL 12/09/2024 (1st Shift)]

Correct Answer: (c) 8
Solution:

34. Two pipes A and B can fill a tank in 48 minutes and 66 minutes, respectively. If both the pipes are opened simultaneously, then after how many minutes should pipe B be closed so that the tank gets filled in 32 minutes? [SSC CGL 12/09/2024 (2nd Shift)]

Correct Answer: (c) 22
Solution:

35. There are two pipes used to fill a tank and when operated together, they can fill the tank in 20 minutes. If one pipe can fill the tank two and a half times as quickly as the other, then the faster pipe alone can fill the tank in: [SSC CGL 13/09/2024 (1st Shift)]

Correct Answer: (c) 34 min
Solution:

36. A pipe can fill an empty tank in 5 minutes and another pipe can empty it in 6 minutes. If both pipes are opened simultaneously, how much time (in minutes) will it take to fill the empty tank? [SSC CGL 13/09/2024 (2nd Shift)]

Correct Answer: (b) 30 min
Solution:

37. Pipes A and B can fill a tank in 15 hours and 25 hours, respectively, whereas pipe C can empty the full tank in 40 hours. All three pipes are opened together, but pipe A is closed after 5 hours. After how many hours will the remaining part of the tank be filled? [SSC CGL 17/09/2024 (1st Shift)]

Correct Answer: (d)
Solution:

38. Two pipes can fill a tank in 12 hours and 18 hours, respectively, while a third pipe can empty it in 8 hours. How long (in hours) will it take to fill the empty tank if all three pipes are opened simultaneously? [SSC CGL 17/09/2024 (3rd Shift)]

Correct Answer: (d) 72
Solution:

39. Pipe X can fill a tank in 9 hours and Pipe Y can fill it in 21 hours. If they are opened on alternate hours and Pipe X is opened first, in how many hours shall the tank be full? [SSC CGL 19/09/2024 (1st Shift)]

Correct Answer: (b)
Solution:

40. At a school building, there is an overhead tank. To fill this tank 50 buckets of water are required. Assume that the capacity of the bucket is reduced to two-fifth of the present. How many buckets of water are required to fill the same tank? [SSC CGL 19/09/2024 (2nd Shift)]

Correct Answer: (c) 125
Solution: