The population of a city is 225000. If the annual birth rate and death rates are 4.5% and 2.5%, respectively, calculate the increase in the population of the city after 2 years.
Answer & explanation
Correct answer: option 2
Net increment per year = ( 4.5 -2.5)% = 2%
Population after 2 years = 225000 × \(\frac{102}{100}\) × \(\frac{102}{100}\)
= 225000 × \(\frac{51}{50}\) × \(\frac{51}{50}\) = 234090
Now ,
Increment in population = 234090 - 225000
= 9090