SOLUTION: jim can paint a house in 6 hours. bob can paint the same house in 4 hours. How long will it take the two of them to paint the house

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Question 279233: jim can paint a house in 6 hours. bob can paint the same house in 4 hours. How long will it take the two of them to paint the house
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Find the hourly rate of the two painters:
If Jim can paint the house in 6 hours, then he can paint 1%2F6 of the house in 1 hour.
If Bob can paint the house in 4 hours, then he can paint 1%2F4 of the house in 1 hour.
Working together, Jim & Bob can paint 1%2F6+%2B+1%2F4+=+5%2F12 of the house in 1 hour.
If they can paint 5%2F12 of the house in 1 hour, then they can paint the entire house in 12%2F5 hours.
12%2F5+=+22%2F5hours or...
2 hours 24 minutes.