Blake has entered a mountain bike competition at Starvation Flats Bike Park. Placement in the competition is determined by a per
son's average speed over four laps around the course. The course itself is of a mile long. If Blake completed the four laps in 12 minutes, then his average speed around the track is miles per hour.
Distance = rate * time, or rewritten rate = distance / time ---> r = d/t <span>4 laps, 1 mile per lap = 4 miles = d </span> <span>12 minutes = 1/5 of hour (12 min/60 min = 1/5) = t </span>
