Jana ran the first 3 miles of a 5-mile race in hour. Which of these shows how to find her average rate, in miles per
hour, for this first part of the race?
OA) divide by 3 miles to get mph
B) divide 3 miles by to get 9 mph
OC) divide by 5 milles to get
mph
OD) divide 5 miles by to get 15 mph