SOLUTION: if ken takes 6 hours to pick 20 bushels of apples and working together with his son it takes 4 hours, how long would it take his son working alone

Algebra ->  Rate-of-work-word-problems -> SOLUTION: if ken takes 6 hours to pick 20 bushels of apples and working together with his son it takes 4 hours, how long would it take his son working alone      Log On


   

Question 729925: if ken takes 6 hours to pick 20 bushels of apples and working together with his son it takes 4 hours, how long would it take his son working alone
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Rates are additive. The rate unit is bushels per hour.

Ken and his son working together, 20%2F4 bushels per hour.
Ken himself, 20%2F6 bushels per hour.
Ken Plus Son = Ken alone + Son alone
20%2F4=20%2F6%2BR, where R is his son's rate.