The answer would be D how are the trails used
You do distance over time to get the rate, so you'd do 27/2= 13.5mph then divide that in half since you're asking for the distance traveled in half that hour so you do 13.5/2 and you get 6.75 miles traveled in half and hour.
Divide each side by 3. ----- n=M/3 .

Multiply both sides of the equation by 12
