A mile is a unit of distance. An hour is a unit of time. Without some unit of speed to convert, the two units are incompatible.
About 10 hours.
At an average 75 mph, 10 hours.
750 miles / 60 miles/hr = 12.5 hours.
750 miles @ 60 MPH is 12.5 hr.
10.71 hours (no rest period)
About 11 hours 32 minutes
11 hours 32 minutes @65 mph
750 miles and hours mate
Time = Distance/Speed = 750/55 = 13.6363.. hours - assuming you can keep up an average speed of 55 mph for more than 13 hours.
about 750 miles
750 miles, or about two hours.
750 miles