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Economics · 2025 · 4 marks
Determination of Income and EmploymentDetermination of Equilibrium Income in the Short Run4 marksApplyshort answer
CBSE 2025 · Region 4 · Set 2 · Q15
Assuming the following for a hypothetical economy, estimate the Break-even level of Income and Equilibrium level of Income: (i) Autonomous…
Assuming the following for a hypothetical economy, estimate the Break-even level of Income and Equilibrium level of Income :
(i)
Autonomous Consumption Expenditure ($\displaystyle \bar{c}$) = ₹ $\displaystyle 50$ crore
(ii)
Marginal Propensity to Save (MPS) = $\displaystyle 0$·$\displaystyle 2$
(iii)
Autonomous Investments ($\displaystyle I_0$) = ₹ $\displaystyle 100$ crore
Marking-scheme solution
Given, Autonomous Consumption Expenditure ($\displaystyle \bar{c}$) = ₹ $\displaystyle 50$ croreMarginal Propensity to Save (MPS) = $\displaystyle 0.2$Autonomous Investments ($\displaystyle I_0$) = ₹ $\displaystyle 100$ croreMarginal Propensity to Consume (MPC) = $\displaystyle 1$ – MPS= $\displaystyle 1$ - $\displaystyle 0.20$ = $\displaystyle 0.80$As we know, at Break-even level of income; Y = CY = $\displaystyle \bar{c}$ + (MPC) YY = $\displaystyle 50$ + $\displaystyle 0.80$ YY = ₹ $\displaystyle 250$ croreAt equilibrium level of income; Y = C + IY = ($\displaystyle 50$ + 0.80Y) + $\displaystyle 100$Y = ₹ $\displaystyle 750$ croreAlternate SolutionAs we know, at Break-even level of income; S = $\displaystyle 0$S = - $\displaystyle \bar{c}$ + (MPS) Y$\displaystyle 0$ = - $\displaystyle 50$ + $\displaystyle 0.20$ YY = ₹ $\displaystyle 250$ croreAs we know, at equilibrium; S = I-$\displaystyle 50$ + $\displaystyle 0.20$ Y = $\displaystyle 100$Y = ₹ $\displaystyle 750$ crore
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CBSE Class 12 Economics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.