Answer:
2 Minutes
Step-by-step explanation:
the first ratio is 5:10 since it is easier to work with big numbers let's start by  multiplying it by 2 to get something
Now we have 10:20 we can divide this by 10 and get the ratio 1:2
1:2 equals 1 mile:2 minutes which is 1 mile in 2 minutes!
Have a nice day and I hope this helps!
