What is the marginal propensity to consume in freedonia

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SHOW THE MATH: You are given the following data concerning Freedonia, a legendary country:

1. Consumption function: C=200+0.8Y

2. Investment function: I=100

3. AE≡C+I

4. AE=Y

a) What is the marginal propensity to consume in Freedonia, and what is the marginal propensity to save?

b) Graph equations (3) and (4) and solve for equilibrium income.

c) Suppose equation (2) is changed to (2´) I=110. What is the new equilibrium level of income? By how much does the $10 increase in planned investment change equilibrium income? What is the value of the multiplier?

d) Calculate the saving function for Freedonia. Plot this saving function on a graph with equation (2). Explain why the equilibrium income in this graph must be the same as in part b.

Reference no: EM131244345

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