QUANTITATIVE APTITUDE - PIPES AND CISTERNS SET 04

PIPES AND CISTERNS SET 04

1. A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
 

A. 15 min        B. 20 min        C. 27.5 min        D. 30 min
 

2. Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in:
 

A. 623    hours        B. 6 hours        C. 712hours        D. 7 hours
 

3. 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 liters a minute. When the tank is full, the inlet is opened and due to the leak, the tank is empty in 24 hours. How many liters does the tank hold?
 

A. 4010 litre        B. 2220 litre        C. 1920 litre        D. 2020 litre
 

4. A cistern can be filled by a tap in 3 hours while it can be emptied by another tap in 8 hours. If both the taps are opened simultaneously, then after how much time will the cistern get filled?
 

A. 4.8 hr        B. 2.4 hr        C. 3.6 hr        D. 1.8 hr
 

5. Two taps A and B can fill a tank in 5 hours and 20 hours respectively. If both the taps are open then due to a leakage, it took 40 minutes more to fill the tank. If the tank is full, how long will it take for the leakage alone to empty the tank?
 

A. 28 hr        B. 16 hr    C. 22 hr        D. 32 hr
 

6. Bucket P has thrice the capacity as bucket Q. It takes 80 turns for bucket P to fill the empty drum. How many turns it will take for both the buckets P and Q, having each turn together to fill the empty drum?
 

A. 30        B. 45        C. 60        D. 80
 

7. Two pipes A and B can separately fill a cistern in 40 minutes and 30 minutes respectively. There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 20 minutes. In how much time, the third pipe alone can empty the cistern?
 

A. 120 min        B. 100 min        C. 140 min        D. 80 min
 

8. Two pipes A and B can fill a tank in 9 hours and 3 hours respectively. If they are opened on alternate hours and if pipe A is opened first, in how many hours will the tank be full?
 

A. 4 hr            B. 5 hr            C. 2 hr            D. 6 hr
 

9. 13 buckets of water fill a tank when the capacity of each bucket is 51 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 17 litres?
 

A. 33        B. 29        C. 39        D. 42
 

10. Pipe A can fill a tank in 8 hours, pipe B in 4 hours and pipe C in 24 hours. If all the pipes are open, in how many hours will the tank be filled?
 

A. 2.4 hr        B. 3 hr        C. 4 hr            D. 4.2 hr
 

Answer Keys:
1.D
2.D
3.C
4.A
5.A
6.C
7.A
8.B
9.C
10.A