In a grand prix automobile race, Speedy Ryder averaged 110 miles per hour for the first half of the course and 130 miles per hour for the second half of the course. Cannonball Carter maintained a constant speed of 120 miles per hour throughout the race. Who won the race?

Answer 1

Speedy
d at 110 and d at 130
t = d/110 + d/130 = d(.01678)

Cannon
2 d at 120
t = 2 d/120 = d/60 = d(.01667)

Speedy's time is bigger, he lost