A bicyclist rode a distance of 24 miles in 48 minutes. What was the average rate of the bicyclist in miles per hour? (Enter an exact number as an integer, fraction, or decimal.)
1 h = 60 min
1 min = 1 / 60 h
48 min = 48 / 60 h =
12 • 4 / 12 • 5 h = 4 / 5 h
24 mi / 48 min = 24 mi / ( 4 / 5 ) h
5 • 24 mi / 4 h = 120 mi / 4 h=
30 mi / h