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Two pipes P and Q can fill an empty tank...

Two pipes P and Q can fill an empty tank in 25 hours and 20 hours respectively. Pipe R alone can empty the completely filled tank in 50 hours. Firstly both the pipes P and Q are opened and after 8 hours, pipe R is also opened. What will be the total time (in hours) taken to completely fill the tank?

A

12

B

10

C

14

D

13

Text Solution

Verified by Experts

The correct Answer is:
A
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