you have miles per how many minutes and you need miles per hour you know 60 minutes make 1 hour convert the minutes to hours this will gives you miles per equivalent hour you need miles per 1 hour
Here is number 1 1) 5 miles in 20 minutes 5 miles in (20/60) hr = 5 miles in 1/3 hr to get 1 hr multiply by 3 equation so keep the balance 5 * 3 = 15 rate = 15 miles per hour.
