Question

Keilantra wants to ride her bicycle 28.8 miles this week. She has already ridden 4 miles. If she rides for 4 more days, write and solve an equation which can be used to determine mm, the average number of miles she would have to ride each day to meet her goal.

Answer 1

Let m = average miles per day for the next 4 days. Then total miles will be 4 (already ridden) + 4m (for the 4 days). So

4 + 4m = 28.8.

Solve: 4m = 28.8 − 4 = 24.8, so m = 24.8 / 4 = 6.2.

Keilantra must ride 6.2 miles per day for the next 4 days.