Give me a MPH and I'll give you an answer! :)
15.38461538461538 hours
1000/25 = 40 hours.
1000 divided by 80 = 12.5Hrs
5 hours.
1000 / 75 = 13.333 hours
It is a 1000 miles, or a 15 to 15 1/2 hour drive.
1000 km = 621 miles. At 55 mph, that would take 11.30 hours or 11 hours 18 minutes.
If you maintained exactly 60mpg (never slower, never faster) it would take 16 2/3 hours to drive 1000 miles. But, it you drove 500 miles at 30mph and another 500 at 100mph it would take almost 22 hours, so don't slow down!
Time = Distance/Speed = 1000 miles /70 mph = 14.286 hours
About 14 hours 17 minutes 8 seconds.
1,000 / 80 = 12.5 hours