SOLUTION: Inlet �1� and �2� together can fill a tank in 18 hours. Inlet �2� can fill the tank on its own in 24 hours. In how many hours can inlet �1� alone fill the tank?

Question 601790: Inlet �1� and �2� together can fill a tank in 18 hours. Inlet �2� can fill the tank on its own in 24 hours. In how many hours can inlet �1� alone fill the tank?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Inlet �1� and �2� together can fill a tank in 18 hours. Inlet �2� can fill the tank on its own in 24 hours. In how many hours can inlet �1� alone fill the tank?
.
Let x = time (hours) for inlet 1 alone
then
18(1/x + 1/24) = 1
multiplying both sides by 24x:
18(24 + x) = 24x
432 + 18x = 24x
432 = 6x
72 hours = x

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