Top 10 Questions (Pipes and Cisterns) for SSC CGL and CHSL

Top 10 Questions Arithmetic Ability for SSC CGL and CHSL

Top 10 Questions (Pipes and Cisterns) for SSC CGL and CHSL

Answers are in bold

1)

A tank full of water is emptied in 10 hours due to a hole at the bottom of the tank. If the tank is full of water and also a tap fills the tank at the rate of 4 liter per minute then tank emptied in 15 hours by the hole at the bottom. How much liter of water can be filled in the tank?

A) 2400
B) 4500
C) 1200
D) 7200

2)

A pipe can fill a tank in ‘x’ hours and another pipe can empty it in ‘y’ (y>x) hours. If both the pipes are open, in how many hours will the tank be filled ?

A) (x-y) hours
B) (y-x)hours
C) hours
D) hours

3)

A cistern has 3 pipes A, B and C. A and B can fill it in 3 hours and 4 hours respectively while C can empty the completely filled cistern in 1 hour. If the pipes are opened in order at 3, 4 and 5 p.m. respectively, at what time will the cistern be empty?

A) 6:15 pm
B) 7:12 pm
C) 8:12 pm
D) 8:35 pm

4)

Two pipes can fill an empty tank separately in 24 minutes and 40 minutes respectively and a third pipe can empty 30 gallons of water per minute. If all the three pipes are open, empty tank becomes full in one hour. The capacity of the tank (in gallons) is

A) 800
B) 600
C) 500
D) 400

5)

A cistern has two pipes. One can fill it with water in 8 hours and other can empty it in 5 hours. In how many hours will the cistern be emptied if both the pipes are opened together when of the cistern is already full of water ?

A) hours
B) 10 hours
C) 6 hours
D) hours

6)

A cistern can be filled by two pipes in 20 and 30 minutes respectively. Both pipes being opened, when must the first pipe be turned off so that the cistern may be filled in 10 minutes more ?

A) after 10 minutes
B) after 12 minutes
C) after 20 minutes
D) after 8 minutes

7)

Tapes A and B can fill a bucket in 12 minutes respectively. If both taps are opened and tap A is closed after 3 minutes, how much further time would it take for tap B to fill the bucket?

A) 8 minutes 5 seconds
B) 8 minutes 15 seconds
C) 7 minutes 45 seconds
D) 7 minutes 15 seconds

8)

One pipe fills a water tank three times faster than another pipe. If the two pipes together can fill the empty tank in 36 minutes, then how much time will the slower pipe alone take to fill the tank?

A) 1 hours 21 minutes
B) 1 hours 48 minutes
C) 2 hours
D) 2 hours 24 minutes

9)

A cistern can be filled with water by a pipe in 5 hours and it can be emptied by a second pipe in 4 hours. If both the pipes are opened when the cistern is full, the time in which it will be emptied is

A) 9 hours
B) 18 hours
C) 20 hours
D) hours

10)

A boy and girl together fill a cistern with water. The boy pours 4 liters of water every 3 minutes and the girl pours 3 liters every 4 minutes. How much time will it take to fill 100 liters of water in the cistern?

A) 36 minutes
B) 42 minutes
C) 48 minutes
D) 44 minutes