## Algebra 1: Common Core (15th Edition)

The racetrack is 2.5 miles long. The race had 30 cautionary laps. The cautionary race was a total of $2.5*30=75$ miles. The speed is 80 miles per hour. So $\frac{75}{80}=0.9375$ hours. In minutes, $0.9375*60=56.25$ minutes