SOLUTION: Two pipes empty into a tank. One pipe can fill the tank in 5.0 h, and the other in 6.0 h. How long will it take both pipes together to fill the tank?

Question 1054510: Two pipes empty into a tank. One pipe can fill the tank in 5.0 h, and the other in 6.0 h. How long will it take both pipes together to fill the tank?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Add their rates of filling
pipe 1:
[ 1 tank filled ] / [ 5 hrs ]
pipe 2:
[ 1 tank filled ] / [ 6 hrs ]
--------------------------
Let = time in hrs for both
pipes to fill the tank
rate with both pipes filling:
[ 1 tank filled ] / [ t hrs ]

Multiply both sides by

hrs
and
min
-------------------------
The tank will fill in 2 hrs 43.6 min

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