4 hours. 280/70=4
280/75 = 3hours 44minutes
280 miles
About a five hour drive on Interstate 90. Or about 280 miles.
280/80=3.5 hrs
49.0 miles if u dont believe me drive there and count the miles!!
The average speed would be 280 miles divided by 6 hours, which equals 46.67 miles per hour.
280 feet per second is 190.91 miles per hour.
4 hours 18 minutes at 65 mph
280 kilometers per hour is equivalent to approximately 173.98 miles per hour.
148 mi - about 2 hours 41 mins
Answer: 280 km/h = 173.983 mph