Question 834083
Let t be the time for Paul to do the job alone.


_______________work rate________time__________job
Ron___________(___)_____________t+2___________1
Paul__________(___)______________t____________1
Together______(___)______________5_____________1


Rate*Time=Job, fill in the missing rate information.


_______________work rate________time__________job
Ron___________1/(t+2)_____________t+2___________1
Paul__________1/t_________________t____________1
Together______1/5_________________5_____________1


The rates of both working together are simply additive.  Solve for t.  Use it to compute each person's rate.