SOLUTION: Sonya can paint a room in 7 and a half hours, but it only takes Jen 4 and a half hours to paint the same room. How long will it take them to paint the room together?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Sonya can paint a room in 7 and a half hours, but it only takes Jen 4 and a half hours to paint the same room. How long will it take them to paint the room together?      Log On


   



Question 98383: Sonya can paint a room in 7 and a half hours, but it only takes Jen 4 and a half hours to paint the same room. How long will it take them to paint the room together?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
7.5*4.5/(7.5+4.5)=33.75/12=2.8125 hours to complete the job together.