\[National Income = rac{190}{0.2}\]

\[C = ar{C} + cY\]

In conclusion, Sandeep Garg’s Macroeconomics Class 12 Chapter 4 solutions require a thorough understanding of the concepts of national income, aggregate demand, and aggregate supply. By grasping these concepts and practicing problems, you can develop a strong foundation in macroeconomics and excel in your exams. We hope this article has provided a comprehensive guide to Chapter 4 solutions, helping you to understand the concepts and solve problems with ease.

\[National Income = rac{ar{C} + I + G + (X - M)}{1 - c}\]