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Pipe A can fill a cistern in 4 hours and...

Pipe A can fill a cistern in 4 hours and another pipe B is installed. Both the pipes together fill the cistern in `2 1/2` hours. How long will it take for B alone to fill the cistern.
पाइप A किसी टंकी को 4 घंटे में भर सकती है | एक अन्य पाइप B लगाई गयी | दोनों पाइप एक साथ टंकी को `2 1/2` घंटे में भर सकती है | B को अकेले इस टंकी को भरने में कितना समय लगेगा ?

A

`6(2)/(3)` hours

B

5 hours

C

`5(1)/(6) ` hours

D

`6(3)/(8)` hours

Text Solution

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The correct Answer is:
A
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