At 55mph about 10 hours
36 minutes.
33mins
5 hr 55 min.
Two hours 3 minutes.
10 hours 21 minutes.
22 minutes 54.5 seconds.
450/55=8.181818181818182 hours.
1 hour and 1 minute.
7 hours 49 minutes.
1 hour 16 minutes.
Divide the 1600 by 65 and you'll have your answer !