Working together to get the job done. Betty and Frank, working together , can paint the exterior of a house in 3 days. Frank, by himself, can complete the job in 8 days less than Betty. How long will it take Betty to complete the job by herself?
Suppose Betty can complete the job by herself in x days.
So each day Betty does 1/x ...
A 'Together and Alone' Word Problem is solved. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.