15 miles = 79,200 feet
9,321 miles.
3 hours to travel 15 miles at 5 miles per hour
15 miles
9.32 miles.
15 nautical miles is equal to 17.262 statute miles.
1/15 of an hour, or 4 minutes it can go 15 miles in 1 hour, so it can go 15/15 miles in 1/15 hours 1/15 of an hour is the same as 4/60 of an hour, which is 4 minutes
One hour
It would take 15 hours to bike 225 miles at a speed of 15 mph.
4 hours
15 miles
That is determined by your velocity: At 15 miles per hour, 1 hour. At 30 miles per hour, 30 minutes. At 60 miles per hour, 15 minutes.