55 miles in one hour or 60 minutes
1 mile in 60/55 minutes
Therefore 20 miles in (60/55) x 20 = (12/11) x 20 = 240/11 = 21.818 minutes
36 minutes.
At 55mph about 10 hours
33mins
29 hours 5.5 minutes.
10 hours 21 minutes.
Two hours 3 minutes.
22 minutes 54.5 seconds.
7 hours 49 minutes.
1 hour and 1 minute.
1 hour 16 minutes.
0.8 hours or 48 minutes
9.50909 hours (or 9:30:32.7) 523 / 55 = 9.50909