Nick The Marathon Man

Riddle: Nick timed himself and found out that if he wore a bright white outfit he ran 20 miles in 80 minutes, but when he wore a dark outfit, he ran 20 miles in one hour and twenty minutes. What does this mean for his next race?

Answer: Nothing, as 80 minutes equals an hour and twenty minutes. Source: https://riddles.com/index.php/634

Nick timed himself and found out that if he wore a bright white outfit he ran 20 miles in 80 minutes, but when he wore a dark outfit, he ran 20 miles in one hour and twenty minutes. What does this mean for his next race? — Nick the Marathon Man by Anonymous Riddle