SOLUTION: Jack can wash dishes in 30 minutes and Jill can wash them in 25 minutes. After Jack has been working for 10 minutes, Jill begins to help him. How long will it take both to finish t

Question 955114: Jack can wash dishes in 30 minutes and Jill can wash them in 25 minutes. After Jack has been working for 10 minutes, Jill begins to help him. How long will it take both to finish the dishes?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Jack's rate is:
dishes/minutes
of the dishes
Jack cleans 1/3 of the dishes in min
That means there is of the dishes remaining
--------------------------------------
Add their rates to find time in minutes to
clean the remaining of the dishes

Multiply both sides by

It will take them 9.091 min

Multiply both sides by

OK

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