Question

The population of a city is 125000. If the annual birth rate and death rate are 5.5% and 3.5% respectively, calculate the population of the city after 2 years.

Answer 1

Annual birth rate = 5.5% and annual death rate = 3.5%
Hence annual net growth rate of population = 5.5%-3.5%= 2%
Current population = 125000
After 2 years, population will be 125000(1+2/100)^2 = 125000(1.02)^2 = 130050
Answer: 130050