QUANTITATIVE APTITUDE - PIPES AND CISTERNS SET 02

PIPES AND CISTERNS SET 02

1.Taps A and B can fill a bucket in 12 minutes and 15 minutes respectively. If both are opened and A is closed after 3 minutes, how much further time would it take for B to fill the bucket?
 

A.8 min 15 sec    B.7 min 15 sec    C.6 min 15 sec    D.5 min 15 sec
 

2. A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. Find the time required by the first pipe to fill the tank ?
 

A.10 hours        B.15 hours        C.17 hours        D.18 hours
 

3. One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in
 

A.144 mins        B.140 mins        C.136 mins        D.132 minw
 

4. 12 buckets of water fill a tank when the capacity of each tank is 13.5 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?
 

A.15 bukets        B.17 bukets        C.18 bukets        D.19 bukets
 

5. A tank 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 tank from empty state if B is used for the first half time and then A and B fill it together for the other half.
 

A.15 mins        B.20 mins        C.25 mins        D.30 mins
 

6. There are two pipes which are functioning simultaneouly to fill a tank in 12 hours, if one pipe fills the tank 10 hours faster than other then how many hours second pipe will take to fill the tank ?
 

A.30 hours        B.35 hours        C.40 hours        D.42 hours
 

7. Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in:
 

A. 3917hours        B. 1131hours        C. 2811hours        D. 412hours
 

8. Two pipes A and B can fill a cistern in 3712  minutes and 45minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if pipe B is turned off after
 

A. 5 min        B. 9 min        C. 10 min        D. 15 min
 

9. A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 2/3 hours to fill the tank. The leak can drain all the water of the tank in
 

A. 6 hours        B. 8 hours        C. 9 hours        D. 10 hours
 

10. Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes, and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P,Q and R respectively. What is the proportion of the solution R in the liquid in the tank after 3 minutes?
 

A. 611            B. 511            C. 711            D. 811
 

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