SOLUTION: Mike can finish a job in 5 hours. After working for 20 minutes, he requested Ronald to work with him and the two finished the job in 3 hours. How long would it take Ronald alone t

Question 998268: Mike can finish a job in 5 hours. After working for 20 minutes, he requested Ronald to work with him and the two finished the job in 3 hours. How long would it take Ronald alone to finish the same job?
IS 9 the correct answer?
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
RATES
Mike
Ronald
Both Together

RT=J uniform rates rule to connect rate, time, amount of job.

One-third of an hour Mike worked alone; three hours the two worked together; one whole job done.

, as you were asking. YES.
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