Macroeconomics
Macroeconomics
10th Edition
ISBN: 9781319105990
Author: Mankiw, N. Gregory.
Publisher: Worth Publishers,
Question
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Chapter 11, Problem 1QQ
To determine

The equilibrium income.

Expert Solution & Answer
Check Mark

Answer to Problem 1QQ

Option ‘d’ is the correct answer.

Explanation of Solution

Option (d):

The increases in equilibrium income due to an increase in government purchase can be calculated as follows:

First, calculate the government spending multiplier.

The mulitiplier=1(1MPC)=1(123)=3

Therefore, the value of government spending multiplier is 3.

Now, the increase in equilibrium income due to an increase in government purchase can be calculated as follows:

Changes in income=$120×3=$360

Therefore, the equilibrium income increases by $360 million.

Thus option (d) is correct.

Option (a):

The increases in equilibrium income due to an increase in government purchase can be calculated as follows:

First, calculate the government spending multiplier.

The mulitiplier=1(1MPC)=1(123)=3

Therefore, the value of government spending multiplier is 3.

Now, the increase in equilibrium income due to an increase in government purchase can be calculated as follows:

Changes in income=$120×3=$360

Therefore, the equilibrium income increases by $360 million.

Thus option (a) is incorrect.

Option (b):

The increases in equilibrium income due to an increase in government purchase can be calculated as follows:

First, calculate the government spending multiplier.

The mulitiplier=1(1MPC)=1(123)=3

Therefore, the value of government spending multiplier is 3.

Now, the increase in equilibrium income due to an increase in government purchase can be calculated as follows:

Changes in income=$120×3=$360

Therefore, the equilibrium income increases by $360 million.

Thus, option (b) is incorrect.

Option (c):

The increase in equilibrium income due to an increase in government purchase can be calculated as follows:

First, calculate the government spending multiplier.

The mulitiplier=1(1MPC)=1(123)=3

Therefore, the value of government spending multiplier is 3.

Now, the increase in equilibrium income due to an increase in government purchase can be calculated as follows:

Changes in income=$120×3=$360

Therefore, the equilibrium income increases by $360 million.

Thus option (c) is incorrect.

Economics Concept Introduction

Government spending multiplier: The government spending multiplier indicates the ratio of change in equilibrium income to the change in government spending.

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Students have asked these similar questions
1. According to the Keynesian cross model, if the murginal propensity to consume is 2/3, an increase in government purchases of $120 billion increases equilibrium income by $360 billion. $240 billion $160 billion. $180 billion.
Which of the following features of a Keynesian consumption function is not true?   a. In the short run, current disposable income has the most impact on consumption. b. As income rises, so does the average tendency to consume. c. the average tendency to consume decreases as income increases decrease d .The marginal consumption propensity is smaller than one.
Suppose that the government increases its spending by 50$. If the MPC (marginal propensity to consume) in the economy is 0.5, then according to the Keynesian cross output will a. Increase by 70$ b. Decrease by 100 c. Increase by 100$ d. Not change
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