One lap around a track is equal to one-eighth of a mile. A horse ran a distance of 9 laps in 2 minutes and 30 seconds. What was the horse's average speed in miles per minute?
1/8 x 9 =9/8=1 1/8 miles that the horse ran in 2.5 minutes
[1 1/8] / 2.5 =.45 miles per minute-the average speed of the horse.
