The distance covered in one hour is 76 miles.
Explanation:
Edward drives a car for 28.5 miles.
Therefore, the distance he travels by the car = 28.5 miles.
The time it takes to drive 28.5 miles is 3/8 of an hour.
The formula to find the rate :
Rate = Distance traveled / Time taken in hours.
Here, the distance is 28.5 miles and time is 3/8 hour.
Rate =

To find the distance covered in 1 hour :
Let us assume, 'x' be the distance covered in one hour.
Rate =

Now, comparing the rates to find the x value :
⇒

⇒

⇒

⇒

Therefore, the distance covered in one hour is 76 miles.