Each car is traveling at a constant speed. Find the number of miles each car travels in 1 hour at the given rate.
a. 135 miles in 3 hours
b. 22 miles in 1/2 hour
c. 7.5 miles in 1/4 hour
d. 100/3 miles in 2/3 hour
e. 97 1/2 miles in 3/2 hour