How long would it take to drive 187 miles driving at 75 miles per hour?
At 75 miles per hour, you could go 1.25 miles per minute. Therefore, it would take you 149.6 minutes (roughly 2 1/2 hours) to travel 187 miles.
Well if you are driving 40 miles PER hour, it means it takes 1hour to drive 40 miles. So we know how long it would take to drive 40 miles at 40mph, but there is an extra 20. To do this we just use simple halfing. At 40mph, it would take 1HOUR to drive at 40mph, so if we think, oh it would take 30minutes to go 20 miles at 40miles per hour. So your…
The driving time would be about 4.3215 miles, however it would be difficult to maintain a constant speed of 65 miles per hour. It might be possible to have an average speed of 65 miles per hour, but it is likely that at some time during a drive of that distance you would have exceeded the posted speed limit.