Answer:
Average speed of the car is 60 mph
Explanation:
300 miles divided by 5 hours will give you yours mph (miles per hour, which is also your "average speed" for this trip), So
300 / 5 = 60 mph
To take this further and find the miles per minute, you would take your mph and divide that by 60 (because there are 60 minutes in 1 hour), So
60 / 60 = 1 mile per minute