SOLUTION: A tank can be filled in 2 hours. The same tank can be emptied in 6 hours. If the faucet is turned on and drain is left open, when will the tank overflow?

Question 651030: A tank can be filled in 2 hours. The same tank can be emptied in 6 hours. If the faucet is turned on and drain is left open, when will the tank overflow?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
A tank can be filled in 2 hours. The same tank can be emptied in 6 hours. If the faucet is turned on and drain is left open, when will the tank overflow?
**
let x=time when tank will overflow
1/2=flow rate of faucet
1/6=flow rate of drain
flow rate*time=volume
x/2-x/6=100%=1
LCD:6
3x-x=6
2x=6
x=3
when will the tank overflow? 3 hrs
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