Answer:
D. 10 miles in 75 minutes
Explanation:
Find the unit rate in miles per minute for all given rates.
4 miles / 30 minutes = 4/30 miles/minute = 2/15 miles/minute
A. 6 miles / 50 minutes = 6/50 miles/minute = 3/25 miles/minute
B. 3 miles / 20 minutes = 3/20 miles/minute
C. 8 miles / 80 minutes = 8/80 miles/minute = 1/10 miles/minute
D. 10 miles / 75 minutes = 10/75 miles/minute = 2/15 miles/minute
Answer: D. 10 miles in 75 minutes