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Two pipes A and B can fill a tank in 15 ...

Two pipes A and B can fill a tank in 15 hours and 18 hours, respectively. Both pipes are opened simultaneously to fill the tank. In how many hours will the tank be filled?
दो पाइप A और B क्रमशः 15 घंटे और 18 घंटे में एक टैंक भर सकते हैं। टैंक को भरने के लिए दोनों पाइप एक साथ खोले जाते हैं। कितने घंटे में टैंक भर जाएगा

A

a) `7 2/11`

B

b) `9 2/11`

C

c) `10 2/11`

D

d) `8 2/11`

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PINNACLE-PIPE & CISTERN-EXERCISE
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  3. Pipes A and B can empty a filled tank in 20 hours and 15 hours respect...

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  4. Pipes A and B can fill a tank in 24 hours and 30 hours, respectively, ...

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  5. Pipes A and B can fill a tank in 10 hours and 40 hours, respectively. ...

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  6. Tap A can fill a tank in 6 hours, tap B can fill the same task in 8 ho...

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  7. Tap A can fill a tank in 20 hours and tap B can fill the same tank in ...

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  8. Tap A can fill a tank in 6 hours and tap B can empty the same tank in ...

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  9. Pipe A and B fill a tank in 43.2 minutes and 108 minutes, respectively...

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  10. Pipes A and B can fill a tank in 12 minutes and 15 minutes, respective...

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  11. Two pipes A and B can fill a tank in 15 hours and 18 hours, respective...

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  12. Pipes A and B can fill a tank in 16 hours and 24 hours, respectively, ...

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  13. When operated separately , pipe A takes 5 hours less than pipe B to fi...

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  14. Two pipes can fill a tank in 15 hours and 4 hours, respectively , whil...

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  15. Pipe A, B and C can fill an empty tank in 30/7 hours, if all the three...

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  16. Pipes A,B and C can fill a tank in 15, 30 and 40 hours respectively. P...

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  17. Pipes A and B can fill a tank in 16 hours and 24hours respectively, wh...

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  18. Two pipes a and b can fill a tank in 12 hours and 18 hours, respective...

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  19. A pump can fill a tank with water in 1 hour, Because of a leak, it too...

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  20. Two pipes A and B can fill a cistern in 12 1/2 hours and 25 hours, res...

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