SOLUTION: if person A can paint a house in 4 hours, and person B can paint the same house in 7 hours... how much time would it take for A and B to paint the same house working together?

Question 554834: if person A can paint a house in 4 hours, and person B can paint the same house in 7 hours... how much time would it take for A and B to paint the same house working together?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Add their rates of painting to get their
rate working together
A's rate: ( 1 house ) / ( 4 hours )
B's rate: ( 1 house ) / ( 7 hours )
Let their time working together =

Multiply both sides by

Working together, they paint the house in 2 hrs and 33 min
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