Answer:
1 inch= 20 miles. 5*20=100 miles. The answer is 100 miles.
Explanation:
On these types of questions just do that every time, then you don't need to ask, for example:
1 foot = 50 miles
If it measures 3 feet.
3*50=150 miles.
If you have any questions regarding my answer, tell me in the comments, and I will answer them.