SOLUTION: If Colleen were to paint her living room alone, it would take 4 hours. Her sister Evelyn could do the job in 7 hours. How long would it take them working together? If needed, sub

Algebra ->  Rate-of-work-word-problems -> SOLUTION: If Colleen were to paint her living room alone, it would take 4 hours. Her sister Evelyn could do the job in 7 hours. How long would it take them working together? If needed, sub      Log On


   



Question 1075649: If Colleen were to paint her living room alone, it would take 4
hours. Her sister Evelyn could do the job in 7
hours. How long would it take them working together? If needed, submit your answer as a fraction reduced to lowest terms.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If Colleen were to paint her living room alone, it would take 4
hours. Her sister Evelyn could do the job in 7
hours. How long would it take them working together?
----------
Colleen paints 1/4 of the LR per hour.
Evelyn paints 1/7 of the LR per hour.
---
Together, they paint 1/4 + 1/7 per hour.
Can you do the rest?