SOLUTION: If Terri were to paint her living room alone, it would take 5 hours. Her sister Violet could do the job in 7 hours. How many hours would it take them working together? Express your

Question 1074199: If Terri were to paint her living room alone, it would take 5 hours. Her sister Violet could do the job in 7 hours. How many hours would it take them working together? Express your answer as a fraction reduced to lowest terms, if needed.
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
Terri's rate, room per hours.
Violet's rate, room per hours.

Working together, their combined rate is

, ROOMS per HOURS.

The TIME for them together to paint the one room is

hours
or
2 hours 55 minutes
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