Accepted Answer
(15 miles / 2 minutes) times (60 minutes / 1 hour) = 15 x 60 / 2 = 450 miles per hour.
Suggested Answer
Remember:1 mile per minute = 60 miles per hourSo:[tex]\frac{15 \ miles}{2 \ min}=\frac{15}{2}*60=450 \ miles \ per \ hour[/tex]