Question

Answer the following three questions based on the information below about Nigeria's 2019 population. The first two questions or worth 3 points, the last question is worth 4 points.

Population size: 200,946,000

Birth rate: 38 per 1,000 people

Death rate: 12 per 1,000 people

Net emigration: 60,000

i) How many total deaths occurred in Nigeria in 2019? ______

ii) How many total births occurred in Nigeria in 2019? _______

iii) Taking into account total number of births, deaths, and emigrants, what was the total population change in 2019? _______

Answer 1

Total population of Nigeria(N) = 200,946,000

Natality rate = 38 per 1000

Total births in year 2019 =(200946000/1000)*38

= 7,635,948

Mortality rate = 12 per 1000

Total deaths in 2019 = (200946000/1000)*12

= 2,411,352

Total population after births, deaths and emigration is:-

Number of births(B) = 7,635,948

Number of deaths(D) = 2,411,352

Number of emigrants(E) = 60,000

Total population = (N + B - D - E)

=200,946,000+7,635,948-2,411,352-60000

=206,110,596

From the original populations the new births are added to the population and deaths are reduced. Emmigrants leave the population hence they are also subtracted from original population.

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