Last Saturday, Mr. Stone drove 320 miles in 5 hours. What is the unit rate of miles per hour?
To calculate the unit rate of miles per hour, you divide the total number of miles driven by the total number of hours it took.
In Mr. Stone's case, he drove 320 miles in 5 hours. So the calculation for the unit rate would be:
320 miles รท 5 hours = 64 miles per hour
So, Mr. Stone's average speed was 64 miles per hour.