A tank can be filled by tap A in 2 hours and tap B in 5 hours. Tap C can empty the filled tank in 8 hours. If all the taps are opened simultaneously, how long will it take to fill the tank completely?

A tank can be filled by tap A in 2 hours and tap B in 5 hours. Tap C c

1.	A tank can be filled by tap A in 2 hours and tap B in 5 hours. Tap C can empty the filled tank in 8 hours. If all the taps are opened simultaneously, how long will it take to fill the tank completely?
A.	12 hours
B.	10/3 hours
C.	8 hours
D.	40/23 hours
Answer» E.

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A tank can be filled by tap A in 2 hours and tap B in 5 hours. Tap C can empty the filled tank in 8 hours. If all the taps are opened simultaneously, how long will it take to fill the tank completely?

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