SOLUTION: One hose can fill a goldfish pond in 84 minutes, and two hoses can fill the same pond in 35 minutes. Find how long it takes the second hose alone to fill the pond.

Question 351472: One hose can fill a goldfish pond in 84 minutes, and two hoses can fill the same pond in 35 minutes. Find how long it takes the second hose alone to fill the pond.
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
One hose can fill a goldfish pond in 84 minutes, and two hoses can fill the same pond in 35 minutes. Find how long it takes the second hose alone to fill the pond.
.
Let x = minutes for second hose to fill pond alone
then
35(1/84 + 1/x) = 1
Multiplying both sides by 84x:
35(x + 84) = 84x
35x + 2940 = 84x
2940 = 49x
60 minutes = x
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