It will take approx 18 minutes 28 seconds.
It will take 20 min to go 20 miles at 60 mph.
It would take 12 minutes to drive 20 miles at 100 mph.
20
How long dose it take to go 20 miles at 90 mph
20 minutes at 60 mph.
20 mph = 20 miles in one hour so half of that is the answer 10 miles in half an hour = 30 minutes
45 minutes.
About 20 minutes.
51 minutes
20 minutes @65 mph
20 minutes
1.2 hours