Suppose, following data is presented, for an imaginary economy: Autonomous Consumption = ₹100 crore Marginal Propensity to Consume = 0.6 Investment = ₹200 crore. Identify which of the following is the correct value of national income? |
₹750 crore ₹800 crore ₹900 crore ₹600 crore |
₹750 crore |
The correct answer is Option (1) → ₹750 crore To find the correct value of national income, we can use the Keynesian model's equilibrium condition where National Income (Y) equals Aggregate Demand (AD). In a simple economy with autonomous consumption, induced consumption, and investment, the aggregate demand is given by: AD = C + I Where: C = Consumption I = Investment The consumption function is given by: C = Autonomous Consumption + (Marginal Propensity to Consume * Y) C =$\bar C$ + cY Given the data: Autonomous Consumption ($\bar C$) = ₹100 crore Marginal Propensity to Consume (c) = 0.6 Investment (I) = ₹200 crore Substitute the consumption function into the aggregate demand equation: AD = ($\bar C$ + cY) + I At equilibrium, Y = AD: i.e Y = $\bar C$ + cY + I Y = 100 + 0.6Y + 200 Y = 300 + 0.6Y Y - 0.6Y = 300 0.4Y = 300 Y = 750 Y = 750 Therefore, the correct value of national income is ₹750 crore. |