Question

Charlie ran 5 miles in 51.5 minutes. Use the equation 5r=51.5 to find r, the average rate he ran.

Answer 1

5r = 51.5
r = 51.5 / 5
r = 10.3

Answer 2

Hi! For this question, all you have to do is divide 51.5 and 5r by 5.

5r = 51.5
---    -----
5      5

The 5r will cancel out, and leave you with:
r = 10.3

Hope that helped!