Here is another way to look at it. You can simply set up a proportion. For example, miles/minutes = x/minutes.
10 miles = x__miles__
5 minutes 3minutes
Now, just cross multiply: 10*3= 5(x)
30=5x Solve for "x" by dividing both sides of the equation by the number next to the "x."
I hope that this also helps. Susan C.