An economic system is a particular set of social institutions which deals with the production, distribution and consumption of goods and services in a particular society. The economic system is composed of people and institutions, including their relationships to productive resources, such as through the convention of property. In a given economy, it is the systemic means by which problems of economics are addressed, such as the economic problem of scarcity through allocation of finite productive resources. Examples of contemporary economic systems include capitalist systems, socialist systems, and mixed economies. Economic systems is the economics category that includes the study of respective systems.