Question

How long will it take you to ski a distance of 36 miles at a speed of 3 miles per 30 minutes

Answer 1

36 ÷ 3 = 12
12 x 30 = 360 (mins)

The answer is that it would take you 360 minutes to ski a distance of 36 miles.
or you could say: t would take you 6 hours to ski a distance of 36 miles.