There is a simple formula that you should use to work this out.
Speed = Distance / Time.
If we want to calculate the time then we need to re-arrange our formula to:
Time = Distance / Speed.
So,
Time = 15 / 60
= 1/4
So it would take 1/4 of an hour (remember we must keep our units the same so as we have input mph for speed and miles for distance our time will be in hours) to travel 15 miles at 60mph. If you prefer you can then convert this in to minutes. 1/4 of an hour = 1/4 * 60 = 15 minutes.
10.5
going 60 miles an hour
It would take 12 minutes to drive 20 miles at 100 mph.
601/60=10.0166 It would take 10.0166 hours to drive the 601 miles.
It would take about 46 minutes to drive 50 miles.
2000 miles
it depends on your speed
About 5.5 hours.
Depends on your speed.
6 hours
33mins
Depends on the speed