SOLUTION: For Joan, it takes 10 hours to paint a house. However, Jessica takes 5 hours to paint a house. If working together, how long would they take?

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Question 1023170: For Joan, it takes 10 hours to paint a house. However, Jessica takes 5 hours to paint a house. If working together, how long would they take?
Answer by ikleyn(52818) About Me  (Show Source):
You can put this solution on YOUR website!
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For Joan, it takes 10 hours to paint a house. However, Jessica takes 5 hours to paint a house.
If working together, how long would they take?
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1%2F10+%2B+1%2F5 = 1%2F10+%2B+2%2F10 = 3%2F10.

It will take 10%2F3 hours = 31%2F3 hours.

For details see the lesson Using fractions to solve word problems on joint work in this site.