For problem 12 you would do 44.8 times 5 and that would give you 224 miles.
Problem 13: In the first race he drove at an average speed of 149 miles per hour. I got this by dividing 2.5 by 372.5. In the second race he drove 144 miles per hour. I determined this by dividing 3.2 by 460.8. Therefore, in his first race he drove the fastest average speed.
I hope this helps!
