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

Pipes A and B can fill a tank in 6 hours and 8 hours respectively and pipe C can empty the full tank in 12 hours. All three pipes are opened together, A is closed after 3 hours. In how many hours will the remaining part of the tank be filled?

A

9

B

12

C

11

D

10

Text Solution

Verified by Experts

The correct Answer is:
A
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