NTT Data Pipes and Cisterns Quiz – 1

Question 1

Time: 00:00:00
Pipes P and Q can fill a tank in 4 and 8 hours respectively. Pipe R can empty it in 10 hours. If all the three pipes are opened together, then the tank will be filled in:

\frac{40}{11}  

\frac{40}{11}  

\frac{17}{8}

\frac{17}{8}

\frac{20}{11}

\frac{20}{11}

\frac{23}{11}

\frac{23}{11}

None of these

None of these

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Question 2

Time: 00:00:00
A pump can fill a tank with water in 3 hours. Because of a leak, it took 7/2 hours to fill the tank. The leak can drain all the water of the tank in:

16

16

24

24

21

21

19

19

18

18

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Question 3

Time: 00:00:00
Two pipes P and Q can fill a cistern in 36 minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the Q is turned off after:

14

14

7.5

7.5

9

9

10.5

10.5

None

None

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Question 4

Time: 00:00:00
A tank is filled by three pipes with uniform flow. The second pipe fills the tank 4 hours faster than the first pipe and 3 hours slower than the third pipe. The first two pipes operating simultaneously fill the tank at the same time during which the tank is filled by the third pipe alone. The time required by the first pipe is:

12.32

12.32

9

9

7.25

7.25

11.58

11.58

None of these

None of these

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Question 5

Time: 00:00:00
Two pipes can fill a tank in 15 and 20 minutes respectively and a waste pipe can empty 5 gallons per minute. All the three pipes working together can fill the tank in 12 minutes. The capacity of the tank is:

52

52

127

127

150

150

211

211

99

99

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Question 6

Time: 00:00:00
Two pipes P and Q together can fill a cistern in 5 hours. If they had been opened separately, then Q would have taken 7 hours more than P to fill the cistern. How much time will be taken by P to fill the cistern separately?

12

12

4

4

10.5

10.5

7.6

7.6

9.5

9.5

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Question 7

Time: 00:00:00
Two pipes P and B can fill a tank in 30 and 40 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank?

\frac{17}{120}

\frac{17}{120}

\frac{700}{11}

\frac{700}{11}

\frac{120}{7}

\frac{120}{7}

\frac{110}{7}

\frac{110}{7}

None of these

None of these

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Question 8

Time: 00:00:00
Two pipes P and Q can fill a tank in 10 minutes and 15 minutes respectively. Both the pipes are opened together but after 5 minutes, the pipe P is turned off. What is the total time ( in minutes) required to fill the tank?

12

12

7.5

7.5

10

10

9

9

11

11

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Question 9

Time: 00:00:00
One pipe can fill a tank 2 times as fast as another pipe. If the two pipes together can fill the tank in 40 minutes, then the slower pipe alone will be able to fill the tank in:

120 min

120 min

100 min

100 min

89 min

89 min

103

103

None of these

None of these

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Question 10

Time: 00:00:00
A tank can be filled by two pipes P and Q in 50 minutes and 30 minutes respectively. How many minutes will it take to fill the tanker from an empty state if Q is used for half the time and P and Q fill it together for the other half?

23

23

19

19

26

26

18

18

29

29

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["0","40","60","80","100"]
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