Question

If autonomous investment increases by $100 million and the marginal propensity to consume (MPC) is 0.75, then


If autonomous investment increases by $100 million and the marginal propensity to consume (MPC) is 0.75, then 


A. real Gross Domestic Product (GDP) will fall by $200 billion. 

B. real Gross Domestic Product (GDP) will rise by $100 billion. 

C. real Gross Domestic Product (GDP) will rise by $200 billion. 

D. real Gross Domestic Product (GDP) will rise by $400 billion.

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Answer #2

Ans: D) real Gross Domestic Product ( GDP ) will rise by $400 billion

Explanation:

Here , MPC = 0.75

∆I = $100

Where I stands for autonomous investment.

Multiplier = 1 / ( 1- MPC ) = 1 / ( 1 - 0.75) = 1 / 0.25 = 4

Increase in GDP = ∆I * Multiplier = $100 * 4 = $400

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