Country A has a population of 102.4 million people and total land area of about 150.7 thousand square miles.

What is the population density (the # of people per square mile?

density is people/mi^2, so just divide the population by the area...

To calculate the population density of Country A, you need to divide the total population by the land area.

Step 1: Convert the land area from thousand square miles to square miles.
150.7 thousand square miles = 150,700 square miles

Step 2: Divide the population by the land area.
Population density = Population / Land area
Population density = 102.4 million / 150,700 square miles

To simplify the calculation, we can convert 102.4 million to billion.
102.4 million = 0.1024 billion

Population density = 0.1024 billion / 150,700 square miles

Using a calculator, divide 0.1024 billion by 150,700 to get the population density.

According to my calculations, the population density of Country A is approximately 679.3 people per square mile.