An athlete runs 8 miles in 50 minutes on a treadmill. At this rate how far can the athlete run in 1 hour

Set it up into ratio or proportion

8/50 : : x/60

The athlete would run 9.6 miles in 1 hour because if you convert 1 hour into minutes you get 60 minutes and if you put it as a proportion 8/50 equals x/60 solve for x and 60 * 8 equals 480 and 480 divided by 50 equals 9.6