Last Saturday, Mr. Stone drove 320 miles in 5 hours. What is the unit rate of miles per hour?(1 point) Responses 60 60 15 15 64 64 80

The unit rate of miles per hour is found by dividing the distance (320 miles) by the time (5 hours), which is 320/5 = 64 miles per hour.

So, the correct response is 64.