Question: 40 miles how long of a drive?
Answer: At 40 miles per hour, you will cover the remaining 20 miles in one half of an hour. The total time on the road will be 1 1/2 hr. 60 / 40 = 1.5 hr. Answer: It will take 1 1/2 hr or 1.5 hr or 1 hour and 30 minutes to get to your destination.