SOLUTION: It takes Ted 20 minutes to paint a wall. Burt can paint the same wall in 30 minutes. How long will it take for the two of them to do the job together?

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Question 188377: It takes Ted 20 minutes to paint a wall. Burt can paint the same wall in 30 minutes. How long will it take for the two of them to do the job together?
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!


For Ted's job: 1 Wall/ 20 minutes

For Burt's job: 1 Wall / 30 minutes

Together Ted & Burt: 1 Wall / x minutes

Let's put that into Eqn:
1%2F20%2B1%2F30=1%2Fx
%283%2B2%29%2F60=1%2Fx
%283%2B2%29x=60%2A1
5x=60 -----> cross%285%29x%2Fcross%285%29=cross%2860%2912%2Fcross%285%29
x=12 minutes Answer (working together)

Thank you,
Jojo