SOLUTION: A small pump can drain a pool in 8 hours, a large pump in 3 hours. You cannot use both pumps at the same time and it take 6 hours to drain the pool. How long did you use both pumps
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Question 868626: A small pump can drain a pool in 8 hours, a large pump in 3 hours. You cannot use both pumps at the same time and it take 6 hours to drain the pool. How long did you use both pumps for?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
a+b=6,
a/8+b/3=1
b=1.2 hours large
a=4.8 hours small pump
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