John manages to run 15 mph for his whole 5-mile race.  The next fastest guy ran the race in 23 minutes.  How many minutes did he win the race by?
John manages to run [NUMBER] mph for his whole [NUMBER]-mile race. The next fastest guy ran the race in [NUMBER] minutes. How many minutes did he win the race by?
He runs the race in 5/15=1/3 of an hour
So he runs the race in 60/3=<<60/3=20>>20 minutes
That means he beat the next fastest guy by 23-20=<<23-20=3>>3 minutes
#### 3