CBSE Class 9 Answered

Age composition refers to the number of people who are included in different age groups. The population of a nation is generally divided into three broad categories as follows:

Children (below 15 years): This group is considered as unproductive and uneconomic as they have to be provided with food, clothing and medical care. They do not contribute towards the economy of the nation.

Working age (15-59 years): This age group is economically productive as they are the working population of the country and contribute towards the economic growth of the country.

Aged (above 59 years): This age group is a retired workforce. However, they may be economically productive if they work voluntarily.

Children and aged affect the dependency ratio as they are not economically productive.