Final answer:
The total population of the country is 280,000,000 and the population density is 2,000 people per square kilometer.
Step-by-step explanation:
The total population of the country can be calculated by adding the number of males and females. Given that there are 150,000,000 males and 130,000,000 females, the total population would be:
Total Population = Number of Males + Number of Females
Total Population = 150,000,000 + 130,000,000
Total Population = 280,000,000
To calculate the population density of the country, we need to divide the total population by the total land area. Given that the land area is 140,000 square kilometers, the population density would be:
Population Density = Total Population / Land Area
Population Density = 280,000,000 / 140,000
Population Density = 2,000 people per square kilometer