The time it takes to drive 20 miles depends on the speed at which you are driving. If you are driving at a constant speed of 40 miles per hour, it would take you 0.5 hours to drive 20 miles (20 miles / 40 miles per hour = 0.5 hours). If you are driving at a constant speed of 60 miles per hour, it would take you 0.33 hours to drive 20 miles (20 miles / 60 miles per hour = 0.33 hours).
About 20 hours.
20 hours at 60 mph
60 miles.
Probably 15-20 hours nonstop
9 hours 20 minutes.
28 hours and 20 minutes.
40 hours 20 minutes at 60 mph
At an average 60 mph: 28 hours, 20 minutes
49 hours, 20 minutes
10 hours 20 minutes at 60 mph
The time (hours) required to drive 20 miles is (20) / (speed, in miles per hour)
20 minutes at 60 mph