SOLUTION: A man can do a piece of work in 5 days,but the help of his son he can do it in 3 days in what time can the son do it?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A man can do a piece of work in 5 days,but the help of his son he can do it in 3 days in what time can the son do it?       Log On


   

Question 822092: A man can do a piece of work in 5 days,but the help of his son he can do it in 3 days in what time can the son do it?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
1/5+1/x=1/3
1/x=5/15-3/15
1/x=2/15
x=7.5