Answer:
3 2/3 yards in 15 minutes
Explanation:
First ting to do is convert all of the units to where all are the same.
20 yards in 90 minutes
3 2/3 yards in 15 minutes
6 yards in 20 minutes
To find the speed per yard take the distance over time.
20 yards in 90 minutes = 0.22 yards per minute
3 2/3 yards in 15 minutes = 0.244 yards per minute
6 yards in 20 minutes = 0.3 yards per minute
Hope this helps!