Pipe A can fill a tank in 12 hours and Pipe B can empty the tank in 18 – InterviewSolution

1.

Pipe A can fill a tank in 12 hours and Pipe B can empty the tank in 18 hours. Both pipes are opened at 6 AM and after some time,pipe B is closed and tank is full at 8 PM. At what time was the pipe B closed?

Answer»

Answer:

9AM

Step-by-step EXPLANATION:

At 9 AM PIPE B was CLOSED.

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