Pipes A and B can fill a tank in 4 and 6 hours.

Pipes A and B can fill a tank in 4 and 6 hours. Pipe C can empty it in 8 hours. If all pipes are opened together, then the tank will be filled in?

Quiz

Answer/Solution

24/7 hr

Steps/Work

Net part filled in 1 hour = 1/4 + 1/6 - 1/8 = 7/24
The tank will be full in 24/7 hr
Answer is B