40 miles for every hour you drive.
75 miles.
100 miles.
7.67 miles.
7 hours to drive 420 miles going 60 mph.
4
2.5 +/-
You will travel 65 miles for every hour you drive at that speed.
I assume you mean 20 miles, while going 12 MPH? It will take you 1 hour and 40 minutes.
At 60 mph, you can drive 10 miles. At 30 mph, you can drive 5 miles.
3 minutes
64.15 hours