Algebra word problems

Question

Andrew and his good buddy Ruben are both mechanics at a shop that does oil changes. They are in a friendly competition to see who can complete the most oil changes in one day. Andrew has already finished 6 oil changes today, and can complete more at a rate of 1 oil change per hour. Ruben just came on shift, and can finish 3 oil changes every hour. Sometime during the day, the friends will be tied, with the same number of oil changes completed. How long will that take? How many oil changes will Andrew and Ruben each have done?

Answer 1

h represents the number of hours

 

6 + h = 3h

 

Can you solve for h and answer?