8/12. 4/6. 2/3 is the simplest. Just keep dividing it down until you can't divide anymore:)
Anything 5 and up, because when you multiply the by 15, they equal more than 65, making the inequality true.
Use the formula speed=distance/time, or s=d/t.
Substitute 2,482 for d and 42.5 for t.
s=2,482/42.5
Simply divide for the answer:
Mr. Douglas' average speed for the trip was 58.4 miles per hour.
I hope this helps! ^_^