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A tank can be filled by pipe A in 5 hour...

A tank can be filled by pipe A in 5 hours and emptied by pipe B in 8 hours respectively. How much time will it take for the tank to be half full?
एक टैंक को पाइप A द्वारा 5 घंटे में भरा जा सकता है और पाइप B द्वारा क्रमशः 8 घंटे में खाली किया जा सकता है। टैंक को आधा भरा होने में कितना समय लगेगा?

A

`3 1/3` h

B

`8 2/3` h

C

`12 1/3` h

D

`6 2/3` h

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