Answer:
Smallest: 15,840 ft
Largest: 16,896 ft
Step-by-step explanation:
1 mi = 5,280 ft
Setup proportion to solve for the <u>smallest</u>:

Do butterfly method and you should get this:

Setup proportion to solve for the <u>largest</u>:

Butterfly method:

Well 1 is a perfect square and it only has 1 factor.
16 is a perfect square and its' factors are 1, 2, 4, 8, and 16
In this problem, we are given a 10-minute range, from 45 to 55 minutes. The question is asking for a 1-minute range, 50.75 to 51.75 minutes. A 1-minute range out of a total 10-minute range gives us 1/10 chance, or 10% probability.