he following equations describe an economy.    Y=C+I+G    C=120+0.6(Y-T)    I=100-10r, G=60 T=40    M/P=Y-20r. M=600 P=20    a. Derive the equations for IS and LM curves.     b. Find the equilibrium level of income and the equilibrium interest rate.    c. Suppose government expenditure increases by 50%. Find the equilibrium interest rate and income.

MACROECONOMICS
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ISBN:9781337794985
Author:Baumol
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Chapter11: Managing Aggregate Demand: Fiscal Policy
Section11.B: Algebraic Treatment Of Taxes And Fiscal Policy
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The following equations describe an economy. 
 
Y=C+I+G 
 
C=120+0.6(Y-T) 
 
I=100-10r, G=60 T=40 
 
M/P=Y-20r. M=600 P=20 
 
a. Derive the equations for IS and LM curves.  
 
b. Find the equilibrium level of income and the equilibrium interest rate. 
 
c. Suppose government expenditure increases by 50%. Find the equilibrium interest rate and income.

 

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