# Quantitative Aptitude Test On Pipes And Cisterns

## Question No : 1

A leak in the bottom of a tank can empty the full tank in 8 hours. An inlet pipe fills water at the rate of 6 liters a minute. When the tank is full, the inlet is opened and due to the leak, the tank is empty in 12 hours. How many liters does the cistern hold?

 A. 7580 B. 7960 C. 8290 D. 8640

## Question No : 2

A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?

 A. 20 hrs B. 25 hrs C. 35 hrs D. None of these

## Question No : 3

A cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 9 hours. If both the taps are opened simultaneously, then after how much time will the cistern get filled?

 A. 4.5 hrs B. 5 hrs C. 7.2 hrs D. 8.2 hrs

## Question No : 4

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 solution R in the liquid in the tank after 3 minutes?

 A. 5/11 B. 6/11 C. 7/11 D. 8/11

## Question No : 5

Two pipes A and B can fill a cistern in 12 minutes and 15 minutes respectively while a third pipe C can empty the full tank in 6 minutes. A and B are kept open for 5 minutes in the beginning and then C is also opened. In what time is the cistern emptied?

 A. 30 min B. 33 min C. 35 min D. 45 min

## Question No : 6

Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would take taken 6 hours more than A fill the cistern. How much time will be taken by A to fill the cistern separately?

 A. 1 hour B. 2 hours C. 6 hours D. 8 hours

## Question No : 7

A water tank is two-fifth full. Pipe A can fill a tank in 10 minutes and pipe B can empty it in 6 minutes. If both the pipes are open, how long will it take to empty or fill the tank completely?

 A. 6 min to empty B. 6 min to fill C. 9 min to empty D. 9 min to fill

## Question No : 8

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 30 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. 4.5 hrs B. 9 hrs C. 18 hrs D. 36 hrs

## Question No : 9

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 sate 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

## Question No : 10

Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill the remaining part in 7 hours. The number of hours taken by C alone to fill the tank is:

 A. 10 B. 12 C. 14 D. 16

## Question No : 11

Bucket P has thrice the capacity as bucket Q. It takes 60 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. 40 C. 45 D. 90

## Question No : 12

Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank?

 A. 12 min B. 15 min C. 25 min D. 50 min

## Question No : 13

Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:

 A. 60 gallons B. 100 gallons C. 120 gallons D. 180 gallons

## Question No : 14

One pipe ca 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. 81 min B. 108 min C. 144 min D. 192 min

## Question No : 15

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

 A. 8 B. 15 C. 16 D. 18

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