SOLUTION: Tweeder can paint a wall in 30 minutes. His brother jessie can paint the same wall in 20 minutes. How long will it take to paint the wall together?

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Question 548666: Tweeder can paint a wall in 30 minutes. His brother jessie can paint the same wall in 20 minutes. How long will it take to paint the wall together?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
1%2F20%2B1%2F30=1%2Ft


1%2F12=1%2Ft


t=12


So it will take 12 minutes if they work together.