Equilibrium income in the economy is $5428.5
The marginal propensity to expend is the ratio of change in aggregate expenditure to change in income. It implies that change in income effects expenditure. The marginal propensity to consume implies a change in consumption due to a change in income.
The equilibrium level of the national income is defined as that point where the aggregate supply and the aggregate demand are equal to each other.
Marginal propensity to expend = 0.7
Autonomous expenditures = $3,800
Equilibrium income = ?
According to the formula,
MPC = dC / dY
Y = (Equilibrium income)
0.7 = 3800 / Y
Y = 3800 / 0.7
= 5428.5
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