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Pipe A can fill a tank in 20 hours while...

Pipe A can fill a tank in 20 hours while pipe B alone can fill it in 30 hours and pipe C can empty the full tank in 40 hours .If all the pipes are opned together ,how much time will be needed to make the tank full ?

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Pipe A can fill a tank in 20 h while pipe B alone can fill it in 10 h and pipe C can empty the full tank in 30 h . If all the pipes are open together , how much time will be needed to make the tank full ?

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UPKAR PUBLICATION -PIPES AND CISTERNS-QUESTION BANK
  1. Two pipes A and B can fill a tank in 24 minutes and 32 minutes resp...

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  2. Two pipes A and B can fill a tank in 1 h and 75 min, respectively. The...

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  3. Pipe A can fill a tank in 20 hours while pipe B alone can fill it in 3...

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  4. A pipe can fill a tank in 15 hours. Due to a leak in the bottom it is ...

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  5. Two pipes A & B can fill a tank in 36 hours and 45 hours respectively....

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  6. A tank can be filled by one tap in 20 min. and by another in 25 min. B...

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  7. A cistern has two taps which fill it in 12 minutes and 15 mintues resp...

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  8. Two taps can separately fill a cistern in 10 minutes and 15 minutes re...

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  9. A tap can fill a tank in 16 minutes and another can empty it in 8 minu...

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

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

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

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

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

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

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

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

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

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

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

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