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Two pipes A and B can fill a tank in 15 ...

Two pipes A and B can fill a tank in 15 hours and 20 hours respectively while a third pipe C can empty the full tank in 25 hours. All the three pipes are opened in the begining. After 10 hours, C is closed. In how much time, will the tank be full?

A

12 hours

B

13 1/2 hours

C

16 hours

D

18 hours

Text Solution

Verified by Experts

The correct Answer is:
A
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