Question

The population of a town increases 4 annually but is decreased by emigration

Answer 1

Answer:

Growth rate is 4% and finally the population is decreased by 0.5% due to emigration. The final growth is 4-0.5=3.5%. Let the population for the first year is x so after 3 years it will be as per compounding =x(1+3.5/100)^3=x(103.5/100)^3

=1.108717825 x

Increase of population after 3 years

=1.108717825x-x=0.108717825x the growth percent =100×0.108717825=10.8717825%

=10.9% approx