30 mph at that rate.
(1 mile/3 min) * (60 min/1 hour) = 20 MPH.
It is 3 mph.
6.923 mph
About 8.75 mph at that rate.
20 minutes equals 20/60 hours or 1/3 hour. 1/3 of 30 miles in an hour is 10 miles.
75 miles at a constant speed
8mph
65 mph equates to 5,720 ft/min
1 hour = 60 min so each one mile = 1 min when 60 mph there for 17 miles will be 60/50*17= 20.40 min.
6.316 mph
19h 6 min
Assuming a constant speed of 80 mph: (620 mi) / (80 mph) equals 7.75 hr or 7 hr 45 min.