Question

74. Given Po = 8000, Births = 200, Deaths = 120. Estimate the population if it is free from migration.​

Answer 1

Population = 8000

Births = 200

Deaths = 120

To find:

Estimate the population if it is free from migration.

Solution:

Change in population size = (Births + Immigration) - (Deaths + Emigration) % of the population were births = 200/8000

= 0.025 = 2.5%

% of the population were deaths = 120/

8000 0.015 = 1.5%

Net growth = (Births - Deaths) / Population

Net growth = (200-120)/8000

Net growth = 80 / 8000

Net growth = 0.01

Net growth = 1%

So, the population would be growing by 1% this first year. That means that after one year, there will be 80 more individuals than the previous year.

Therefore, after one year, the population would be 8080 individuals.

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