SOLUTION: A homeowner estimates that it will take her 7 days to roof her house. A professional roofer estimates that he could roof the house in 6 day(s). How long will it take if the homeown

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A homeowner estimates that it will take her 7 days to roof her house. A professional roofer estimates that he could roof the house in 6 day(s). How long will it take if the homeown      Log On


   

Question 837427: A homeowner estimates that it will take her 7 days to roof her house. A professional roofer estimates that he could roof the house in 6 day(s). How long will it take if the homeowner helps the roofer?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
1/7+1/6=1/x
6/42+7/42=13/42
42/13=x
3.23 =x