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Pipes A and B can fill a tank in 5 and 6...

Pipes A and B can fill a tank in 5 and 6 hours, respectively.
Pipe C can empty it in 12 hours. The tank is half full. All the
three pipes are in operation simultaneously. After how much
time, the tank will be full?

A

`3(9)/(17)` hours

B

11 hours

C

`2(8)/(11)` hours

D

`1 (13)/(17)` hours.

Text Solution

Verified by Experts

The correct Answer is:
D
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