SOLUTION: drain A will empty a tank in 5 hours. Drain B will empty the tank in 6 hours. How long will it take to empty a tank using both drains?

SOLUTION: drain A will empty a tank in 5 hours. Drain B will empty the tank in 6 hours. How long will it take to empty a tank using both drains?

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Question 807876: drain A will empty a tank in 5 hours. Drain B will empty the tank in 6 hours. How long will it take to empty a tank using both drains?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
x/5+x/6=1
x = 30/11
x = 2.7273
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