SOLUTION: sally can paint a room in 3 hours while it takes steve 9 hours to paint the same room. how long would it take them to paint the room if they worked together?
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Question 475244: sally can paint a room in 3 hours while it takes steve 9 hours to paint the same room. how long would it take them to paint the room if they worked together? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! Painting the house 1 job
Sally 3 hours
She does 1/ 3 job in 1 hour
Steve 9 hours
He does 1/ 9 of thejob in 1 hour
Together they will do 1/ 3 + 1/ 9 +
Together they will do 4/ 9 of the job in one hour
So they will take 2 1/4 hours
m.ananth@hotmail.ca
