SOLUTION: Dana can paint a room alone in four hours. Cynthia can do the same job in three hours. How long will it take them to paint a similar room if they work together

Question 729757: Dana can paint a room alone in four hours. Cynthia can do the same job in three hours. How long will it take them to paint a similar room if they work together

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
add their rates of working
Let = hrs to paint room with both working
( 1 room / 4 hrs ) + ( 1 room / 3 hrs ) = 1 room / t hrs

Multiply both sides by

hrs

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