what is my answer for this

Question

what is the answer to Camden wants to ride his bicycle 27.2 miles this week. He has already ridden 17 miles. If he rides for 3 more days, write and solve an equation which can be used to determine mm, the average number of miles he would have to ride each day to meet his goal.

Answer 1

(27.2 - 17)/3 = 10,2/3 = 3.4 miles each of the next 3 days