SOLUTION: If Sally can paint a hous in 4 hours,and John can paint the same house in 6 hours,how long will it take for them to paint the house together?

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Question 106317: If Sally can paint a hous in 4 hours,and John can paint the same house in 6 hours,how long will it take for them to paint the house together?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="time together" ... (Sally's fraction)+(John's fraction)=(whole job)

(x/4)+(x/6)=1