SOLUTION: If Sally can paint a fence by herself in 6 hours and Sally and Linus together can paint the same fence in 4 hours, how long would it take Linus to paint the fence by himself?

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Question 835079: If Sally can paint a fence by herself in 6 hours and Sally and Linus together can paint the same fence in 4 hours, how long would it take Linus to paint the fence by himself?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
4/6+4/x=1
4/x=2/6
4/x=1/3
x=12