You can put this solution on YOUR website! Distance run by Hayden in 5 minutes and 20 secs = 1 mile
Distance run by Hayden in (5*60)+20 secs = 1 mile
Distance run by Hayden in 320 secs = 1 mile
Distance run by Hayden in 3600 secs = 3600*(1/320) miles
Distance run by Hayden in 1 hour = 11.25 miles