A country's population was 20 million in the year 2000. From 2000 to 2005 the annual population growth rate was 2.5 %. From 2005 to 2010 it fell to 1.8 % per year. Beginning in 2010 the government introduced policies that caused the population to decline at a rate of 0.2 % per year.
(a) Calculate the population in 2015 (rounded to two decimal places).
(b) Determine the average annual growth rate for the whole 2000‑2015 period (expressed as a percentage to two decimal places).

Question

A country's population was 20 million in the year 2000. From 2000 to 2005 the annual population growth rate was 2.5 %. From 2005 to 2010 it fell to 1.8 % per year. Beginning in 2010 the government introduced policies that caused the population to decline at a rate of 0.2 % per year. 
(a) Calculate the population in 2015 (rounded to two decimal places). 
(b) Determine the average annual growth rate for the whole 2000‑2015 period (expressed as a percentage to two decimal places).

Accepted Answer

Population in 2015 ≈ 24.49 million; average annual growth rate ≈ 1.36 %

Waec Model Questions Vol1 2017 Economics Question 36

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