SOLUTION: It takes Eddie 7 hours to paint a wall. Alison takes 4 hurs to do the same job. how long would it take them, working together, to paint the wall? Need breakdown please.
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Question 278899: It takes Eddie 7 hours to paint a wall. Alison takes 4 hurs to do the same job. how long would it take them, working together, to paint the wall? Need breakdown please. Found 2 solutions by scott8148, Alan3354:Answer by scott8148(6628) (Show Source):
You can put this solution on YOUR website! in the x hrs it takes for them to paint the wall, Eddie does x/7 of the job and Alison does x/4
___ these two fractions sum to one, the whole job
(x/7) + (x/4) = 1
multiplying by LCD (28) ___ 4x + 7x = 28 ___ 11x = 28 ___ x = 28/11
