Answer:
4.13% of US population lives in Illinois.
Explanation:
In order to know the percent of the US population living in Illinois, we have to the following crossed multiplication:
307,000,000 = 100
12,700,000 = X
X = (12,700,000 . 100) / 307,000,000
X = 1,270,000,000 / 307,000,000
X = 4.13
As we can see, 4.13% of US population lives in Illinois.
