Question

why is national income called a 3 sides ions ​

Answer 1

Answer:

National income is the total value a country’s final output of all new goods and services produced in one year. Understanding how national income is created is the starting point for macroeconomics.

This relationship is expressed in the national income identity, where the amount received as national income is identical to the amount spent as national expenditure, which is also identical to what is produced as national output. Throughout macroeconomics the terms income, output and expenditure are interchangeable.