SOLUTION: One pipe can fill a tank in 8 minutes and a second can fill it in 12 minutes. If the tank is empty, how long will it take both pipes to fill it.

Question 966882: One pipe can fill a tank in 8 minutes and a second can fill it in 12 minutes. If the tank is empty, how long will it take both pipes to fill it.
Answer by ikleyn(52787)   (Show Source): You can put this solution on YOUR website!

The first pipe fills    of the tank volume in 1 minute.

The second pipe fills    of the tank volume in the same time.

Working together, the two pipes fill + = + = of the tank volume in 1 minute.

Hence, it will take minutes for both pipes to fill the tank.
It is equal to    minute = 4 minutes and 48 seconds.

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