The consumption function of the economy of Macro-land is given by C = 200 + 0.75(Y – T) The investment function is given by I = 200 – 25r. Government purchases and taxes are both 100. (a) Find the equation of the IS curve (b) The money demand function in Macro-kand is given by Md = Y – 100r The nominal money supply M is 1,000 and the price level is 2. Find the equation of the LM curve (c) Find the interest rate and income for which the goods and services and money markets are simultancously in equilibrium. (d) Suppose the government purchases are raised from 100 to 150. What are the new equilibrium interest rate and income? (e) Suppose that the money supply is raised from 1,000 to 1,200. What are the new equilibrium interest rate and national income? (1) How will fiscal expansion in the country (Macro-land) affect national income, employment, interest rate, price level and real money balance under the Keynesian aggregate supply condition?

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### Macro-Land Economic Model Analysis

#### Consumption, Investment, and Government Functions
In Macro-land, the economic system is characterized by the following functions:

- **Consumption Function**:
  \[
  C = 200 + 0.75(Y - T)
  \]
  Here, \(C\) represents consumption, \(Y\) is national income, and \(T\) stands for taxes.

- **Investment Function**:
  \[
  I = 200 - 25r
  \]
  \(I\) represents investment and \(r\) is the interest rate.

- **Government Parameters**:
  - Government purchases = 100
  - Taxes = 100

#### Task Analyses

**(a) To Find IS Curve:**

The IS curve represents equilibrium where total spending (aggregate demand) equals total output (aggregate supply). It is derived from:

\[
Y = C + I + G
\]

**(b) Money Demand and LM Curve:**

The money demand function in Macro-land is given by:

\[
M^d = Y - 100r
\]

Given:
- Nominal Money Supply, \(M\) = 1,000
- Price level = 2

Find the equation of the LM curve which represents money market equilibrium.

**(c) Equilibrium Interest Rate and Income:**

Find the values of interest rate (\(r\)) and income (\(Y\)) at which the goods/services market and the money market are simultaneously in equilibrium.

**(d) Effect of Increased Government Purchases:**

Suppose government purchases are increased from 100 to 150. Analyze the resulting changes in equilibrium interest rate and income.

**(e) Effect of Increased Money Supply:**

If the money supply is increased from 1,000 to 1,200, determine the new equilibrium interest rate and national income.

**(f) Fiscal Expansion Effects under Keynesian Aggregate Supply:**

Discuss how a fiscal expansion (increased government spending or reduced taxes) in Macro-land will impact:
- National income
- Employment
- Interest rate
- Price level
- Real money balance

#### Graphs and Diagrams Explanation

The problem might imply plotting the IS and LM curves:

- **IS Curve** slopes downward, showing the relationship between interest rates and national income where goods market is in equilibrium.
- **LM Curve** slopes upward, depicting the relationship where the money market
Transcribed Image Text:### Macro-Land Economic Model Analysis #### Consumption, Investment, and Government Functions In Macro-land, the economic system is characterized by the following functions: - **Consumption Function**: \[ C = 200 + 0.75(Y - T) \] Here, \(C\) represents consumption, \(Y\) is national income, and \(T\) stands for taxes. - **Investment Function**: \[ I = 200 - 25r \] \(I\) represents investment and \(r\) is the interest rate. - **Government Parameters**: - Government purchases = 100 - Taxes = 100 #### Task Analyses **(a) To Find IS Curve:** The IS curve represents equilibrium where total spending (aggregate demand) equals total output (aggregate supply). It is derived from: \[ Y = C + I + G \] **(b) Money Demand and LM Curve:** The money demand function in Macro-land is given by: \[ M^d = Y - 100r \] Given: - Nominal Money Supply, \(M\) = 1,000 - Price level = 2 Find the equation of the LM curve which represents money market equilibrium. **(c) Equilibrium Interest Rate and Income:** Find the values of interest rate (\(r\)) and income (\(Y\)) at which the goods/services market and the money market are simultaneously in equilibrium. **(d) Effect of Increased Government Purchases:** Suppose government purchases are increased from 100 to 150. Analyze the resulting changes in equilibrium interest rate and income. **(e) Effect of Increased Money Supply:** If the money supply is increased from 1,000 to 1,200, determine the new equilibrium interest rate and national income. **(f) Fiscal Expansion Effects under Keynesian Aggregate Supply:** Discuss how a fiscal expansion (increased government spending or reduced taxes) in Macro-land will impact: - National income - Employment - Interest rate - Price level - Real money balance #### Graphs and Diagrams Explanation The problem might imply plotting the IS and LM curves: - **IS Curve** slopes downward, showing the relationship between interest rates and national income where goods market is in equilibrium. - **LM Curve** slopes upward, depicting the relationship where the money market
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