Question

Country	Total Population	Population Density
A	6,500,000 people	600 people per square mile
B	7,600,000 people	400 people per square mile

The table above shows the populations of two countries and their population densities. The number of square miles in the area of Country B is approximately how much greater than the number of square miles in the area of Country A ?

• A. 200
• B. 3,600
• C. 5,000
• D. 8,000
• E. 905,000,000

Answer 1

Answer: (D)

8,000

If you divide people by people per square mile, then you get square miles.

So, for each country, divide the population by the population density.

Country $A$ is $10,833.33$ square miles
Country $B$ is $19,000$ square miles.

$19,000–10,833=8167$ square miles.

Since the question tells us to approximate, therefore the answer is $8000$ square miles.