Given that ,
Consumption expenditure C= 50 + 0.7 ( Y - T )
Investment expenditure I = 100
Government expenditure G =0
Export X =20
Import M = 10 - 0.27
And tax = 25
Here , equilibrium condition is
Income = expenditure
Y = C+I+G+ X-M
i) Determine equilibrium level of national income, where income = expenditure
Y=C+I+G+X−MY=50+0.7(Y−T)+0+20−(10−0.27)Y=50+0.7(Y−25)+20−10+0.27Y=50+0.7Y−17.5+20−10+0.27Y−0.7Y=70.27−27.5Y(1−0.7)=42.770.3Y=42.77Y=342.77Y=142.567
Equilibrium level of national income is 142.567.
ii)
Consumption C=50+0.7(Y−T)=50+0.7(142.567)=50+82.29=132.29
consumption level at equilibrium level of income is 132.29.
iii)
Total import
M=10−0.27M=9.73
Total import at equilibrium income is 9.73.
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