Question

4. The population of a town is 18000. If it increase by 10% during the first year and 20% during the second year, the population after years will be

Answer 1

23760
18000*10%=1800
=18800
18800*20%=3960
=23760

Answer 2

the inital population is 18000
it increases each year by 10%,20%..and so on
so after n years
final population=18000(1+10%)(1+20%)(1+30%)...(1+n(10)%)
=18000(1+0.1)(1+0.2)...(1+(0.1)n)