These are the advantages of study of age structure of population :
1. By determining the 0-14 age group the govt, knows that there is need of expenditure on education, health and social services. So new schools, health centres and community centres are opened.
2. We know the number of eligible voters in the country which is vital for a democracy. There should be 58% voters per age group, but actually there are 60% of voters in the country.
