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Derive the aggregate expenditure function, and calculate the equilibrium real GDP.. Determine the expenditure multiplier using aggregate expenditure function slop value... What is the expenditure multiplier? ... Everything else the same, by how much do

Question#1A

 The following are details of the expenditure of a very small economy. All the autonomous expenditures are given in $ thousand. 

C = 200 + 0.8Yd

 I = 10 

G = 50 

T = 0.05Y 

X = 40 

M = 0.1Y 

 Derive the aggregate expenditure function, and calculate the equilibrium real GDP 

 Determine the expenditure multiplier using aggregate expenditure function slope value 


Question#1B 

Suppose the slope of the AE curve is 0.80. 

i) What is the expenditure multiplier? 

 ii) Everything else the same, by how much does equilibrium aggregate expenditure increase if 

            a) exports increase from $1.75 trillion to $2.25trillion? 

            b) government expenditure on goods and services decreased from $2.0                     trillion to $1.8 trillion?

            c) investment increases from $1.2 trillion to $2.3 trillion?

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