If C = 20 + 0.9Y C= Consumption Y= disposable income $800 billion What is the Multipler? 90 601 c 10 a 20

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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**Consumption Equation and Multiplier Calculation**

In this exercise, we are given the following equation to describe the consumption function:

\[ C = 20 + 0.9Y \]

Where:
- \( C \) represents Consumption
- \( Y \) is disposable income, which is given as $800 billion

**Question:**
What is the Multiplier?

**Options:**
a) 90  
b) 0.1  
c) 10  
d) 20  

**Explanation:**
- To find the multiplier in macroeconomics, we use the formula:  
  \[ \text{Multiplier} = \frac{1}{1 - \text{MPC}} \]  
  where MPC is the marginal propensity to consume. Here, the MPC is 0.9 (from the equation \( 0.9Y \)).

- Using the formula:  
  \[ \text{Multiplier} = \frac{1}{1 - 0.9} = \frac{1}{0.1} = 10 \]

Therefore, the correct answer is option c) 10.
Transcribed Image Text:**Consumption Equation and Multiplier Calculation** In this exercise, we are given the following equation to describe the consumption function: \[ C = 20 + 0.9Y \] Where: - \( C \) represents Consumption - \( Y \) is disposable income, which is given as $800 billion **Question:** What is the Multiplier? **Options:** a) 90 b) 0.1 c) 10 d) 20 **Explanation:** - To find the multiplier in macroeconomics, we use the formula: \[ \text{Multiplier} = \frac{1}{1 - \text{MPC}} \] where MPC is the marginal propensity to consume. Here, the MPC is 0.9 (from the equation \( 0.9Y \)). - Using the formula: \[ \text{Multiplier} = \frac{1}{1 - 0.9} = \frac{1}{0.1} = 10 \] Therefore, the correct answer is option c) 10.
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