SOLUTION: tim can finish painting a barn in 10 hours. it takes his wife jo ann only 8 hours to do the same job. if they work together how long will it take them to complete the job?

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Question 1170261: tim can finish painting a barn in 10 hours. it takes his wife jo ann only 8 hours to do the same job. if they work together how long will it take them to complete the job?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Their combined work rate, 1%2F10%2B1%2F8
or
8%2F80%2B10%2F80
18%2F80
9%2F40jobs%2Fhours

The TIME for the one job,
40%2F9
4%264%2F9hours