SOLUTION: A water tank can be filled by an inlet pipe in 8 hours. It takes 2 times as long for the outlet pipe to empty the tank. How long will it take to fill the tank if both pipes are ope
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Question 1107747: A water tank can be filled by an inlet pipe in 8 hours. It takes 2 times as long for the outlet pipe to empty the tank. How long will it take to fill the tank if both pipes are open?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The rate of filling is [ 1 tank ] / [ 8 hrs ]
The rate of emptying is [ minus 1 tank ] / [ 16 hrs ]
( twice as long and removing water )
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Let = time in hrs to fill the tank with both pipes open
Multiply both sides by
It will take 16 hrs to fill the tank with both pipes open
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