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UPSC CAPF AC Paper - I
IMPORTANT
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A cistern has a leak which would empty it in 8 hours. A tap is turned on which admits 6 litres a minute into the cistern, and it is now emptied in 12 hours. How many litres does the cistern hold ?

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Important Questions on Pipes and Cisterns

EASY
UPSC CAPF AC Paper - I
IMPORTANT
Magical Book on Quicker Maths>Chapter 24 - Pipes and Cisterns>Exercises>Q 10
Two taps can separately fill a cistern in 10 minutes and 15 minutes respectively and when the waste pipe is open, they can together fill it in 18 minutes. The waste pipe can empty the full cistern in _____ minutes.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Magical Book on Quicker Maths>Chapter 24 - Pipes and Cisterns>Exercises>Q 11
A cistern has two taps which fill it in 12 min and 15 min respectively. There is also a waste pipe in the cistern. When all the pipes are opened, the empty cistern is full in 20 min. How long will the waste pipe take to empty a full cistern?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Magical Book on Quicker Maths>Chapter 24 - Pipes and Cisterns>Exercises>Q 12
A tank can be filled by one tap in 20 min. and by another in 25 min. Both the taps are kept open for 5 min. and then the second is turned off. In how many minutes more will the tank be completely filled?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Magical Book on Quicker Maths>Chapter 24 - Pipes and Cisterns>Exercises>Q 13
A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in _____ hrs.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Magical Book on Quicker Maths>Chapter 24 - Pipes and Cisterns>Exercises>Q 14
Two pipes X and Y can fill a cistern in 24 min. and 32 min. 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 minutes?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Magical Book on Quicker Maths>Chapter 24 - Pipes and Cisterns>Exercises>Q 15
A leak in the bottom of a tank can empty the full tank in 6 hours. An inlet pipe fills water at the rate of 4 litres per minute. When the tank is full, the inlet is opened and due to the leak the tank is emptied in 8 hours. The capacity of the tank is _____ litres.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
Magical Book on Quicker Maths>Chapter 24 - Pipes and Cisterns>Exercises>Q 16
A tank has two inlets: P and Q. P alone takes 6 hours and Q alone takes 8 hours to fill the empty tank completely when there is no leakage. A leakage was caused which would empty the full tank completely in 'X' hours when no inlet is open. Now, when only inlet P was opened, it took 15 hours to fill the empty tank completely. How much time will Q alone take to fill the empty tank completely? (in hours)