SOLUTION: when all the leaves have fallen, a girl can rake the entire yard in 6 hours. when a boy does it alone, it takes him 9 hours. how long would it take them to rake the yard together?

SOLUTION: when all the leaves have fallen, a girl can rake the entire yard in 6 hours. when a boy does it alone, it takes him 9 hours. how long would it take them to rake the yard together?

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Question 849249: when all the leaves have fallen, a girl can rake the entire yard in 6 hours. when a boy does it alone, it takes him 9 hours. how long would it take them to rake the yard together?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/6+1/9=1/x
x = 18/5

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