Final answer:
Harry's average speed was calculated by dividing the distance he ran, 5 miles, by the time it took, which was converted to hours (5/6 hours), resulting in an average speed of 6 miles per hour.
Step-by-step explanation:
Harry ran a distance of 5 miles from 10:30 to 11:20. To find Harry's average speed, we need to calculate the total time he took to run this distance and then divide the distance by the time.
Step 1: Determine the amount of time Harry ran.
Start time: 10:30 AM
End time: 11:20 AM
The total time running is 50 minutes.
Step 2: Convert the running time from minutes to hours since speed is measured in miles per hour.
50 minutes = 50/60 hours = 5/6 hours.
Step 3: Calculate the average speed using the formula:
Average speed = Distance / Time
In this case, Average speed = 5 miles / (5/6 hours) = 6 miles per hour (mph).