Alex walked 1 mile in 15 minutes Sally walked 3,520 yards in 24 minutes in miles per hour how much faster did sally walk than Alex

Hi there, to find the answer, we are going to need a equation. So, let's get started. I know that 1 mile equals 1,760 yards, I also know that Alex walked 1 mile in 15 minutes and Sally walked 2 miles in 24 minutes. So, Alex walked 1/4 of an hour and Sally walked 2/5 of an hour, there is 4 miles in 1 hour and 5 miles in 1 hour. We subtract 5 from 4 and we get 1.