A simple macro-economic model is given by Y = C+1+G C = 10 + 0.4Yd | = 25+ 0.2Y Yd = Y -T T= 10 + 0.1Y G = 20 By eliminating G ,T & Yd from the equations, reduce the system to three equations in three unknown and hence use Cramer's rule to find the equilibrium values of Y, C, I. Is there any government budget deficit?

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Chapter9: Demand-side Equilibrium: Unemployment Or Inflation?
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A simple macro-economic model is given
by
Y = C+I+G
C = 10 + 0.4Yd
I= 25+ 0.2Y
Yd = Y -T
T= 10 + 0.1Y
G = 20
By eliminating G ,T & Yd from the
equations, reduce the system to three
equations in three unknown and hence use
Cramer's rule to find the equilibrium values
of Y, C, I.
Is there any government budget deficit?
How does the equilibrium change if the
government has to balance its budget so
that G = T? Use Cramer's rule.
Transcribed Image Text:A simple macro-economic model is given by Y = C+I+G C = 10 + 0.4Yd I= 25+ 0.2Y Yd = Y -T T= 10 + 0.1Y G = 20 By eliminating G ,T & Yd from the equations, reduce the system to three equations in three unknown and hence use Cramer's rule to find the equilibrium values of Y, C, I. Is there any government budget deficit? How does the equilibrium change if the government has to balance its budget so that G = T? Use Cramer's rule.
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