The velocity is 83 miles per hour in some, unspecified, direction. Remember, velocity is a vector, so the direction needs to be specified.
8 hrs 30 min
About 515.7 miles are in 830 km
A little more than 15 hours
830 miles
7.5 hours
6 hours.
Three hours
3 hours.
7 hours
8.5 hours
About 830 miles.
8 hours 15mins.