Question 25608: I am trying to help a homeschooled student with algebra. We are stumped on a problem. It's on a page where you are supposed to use the quadratic formula to solve but i'm having a hard time setting up the equation. It says; working alone Colleen can paint a house in 2 h less than James. Working together, they can paint the house in 10 h. How long would it take James to paint the house by himself? Thank you!
Answer by elima(1433)   (Show Source):
You can put this solution on YOUR website! Working alone Colleen can paint a house in 2 h less than James. Working together, they can paint the house in 10 h. How long would it take James to paint the house by himself?
Let x be the time it takes James to paint the house
So x-2 will be the time Colleen paints the house
so working together;
x+x-2=10
2x-2=10
2x=10+2
2x=12
x=6
So it takes Jmes 6 hrs, so then it takes Colleen;
6-2=4
=)
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