Answer:
[tex]\frac{11}{20}[/tex]
Step-by-step explanation:
Let x is the total population of the world.
Therefore, by the condition given the population of North America is [tex]\frac{2x}{25}[/tex]
Again it is given that [tex]\frac{11}{250}[/tex] fraction of the world's population lives in the United States of America.
So, [tex]\frac{11x}{250}[/tex] is the population of USA.
Therefore, the fraction of the population of North America that is the population of USA will be [tex]\frac{\frac{11x}{250} }{\frac{2x}{25} } =\frac{11}{20}[/tex] (Answer)