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A cistem can be filled by two pipes A an...

A cistem can be filled by two pipes A and B 4 hours and 6 hours respectively. When full , the tank can emptied by a third pipe C in 8 hours. If all taps are turned on at the same time the cistern will be full in ?

A

3 hours 18 min.

B

3 hours 26 min.

C

3 hours 42 min.

D

3 hours 48 min.

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Verified by Experts

The correct Answer is:
B
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UPKAR PUBLICATION -PIPES AND CISTERNS-QUESTION BANK
  1. A tap can fill a tank in 16 minutes and another can empty it in 8 minu...

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  2. A tank is filled by a pipe A in 32 minutes and pipe B in 36 minutes,Wh...

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  3. A cistem can be filled by two pipes A and B 4 hours and 6 hours respe...

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  4. One tap can fill a cistern in 2 hours and another can other can empty ...

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  5. A pipe can fill a tank in x hours and another can empty it in y hours....

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  6. A tap can fill a cistern in 8 hours and another can empty it in 16 hou...

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  7. Two taps A and B can fill a tank in 10 hours and 15 hours, respectivel...

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  8. A cistern has a leak which would empty it in 8 hours. A tap is turned ...

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  9. Three pipes A, B and C can fill a tank in 6 hours. After working at...

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  10. If two pipes function simultaneously, a reservoir will be filled in...

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  11. Two pipes A and B can fill a tank in 15 hours and 20 hours respectivel...

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  12. There are two taps to fill a tank while a third to empty it. When the ...

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  13. A pipe can fill a cistern in 12 min and another pipe can fill it in 15...

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  14. A leak in the bottom of a tank can empty the full tank in 6 hours. An ...

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  15. Two pipes X and Y can full a cistern in 24 minutes and 32 minutes resp...

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  16. A cistern is normally filled in 8 h but takes 2 h more to fill because...

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  17. A water tank is 2/5th full. Pipe A can fill the tank in 10 minutes and...

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  18. A pipe can empty a tank in 12 minutesand another pipe can empty it in ...

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  19. There is a leak in the bottom of cistern .When the cistern is throughl...

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  20. Tap 'A' can fill a water tank in 25 minutes , tap 'B' can fill the sam...

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