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
According to the Keynesian cross model if the marginal propensity to consume is 2/3, cut in taxes of 120 Billion increases equilibrium income by  a) 160 Billion  b) 180 Billion  C) 240 Billion  d) 360 Billion
(Building IS–LM Model) In the Keynesian cross, assume that the consumption function is given by C = 200 + 0.75 (Y − T ). Planned investment is 100; government purchases and taxes are both 100. A. Graph planned expenditure as a function of income. B. What is the equilibrium level of income? C. If government purchases increase to 125, what is the new equilibrium income? D. What level of government purchases is needed to achieve an income of 1,600?
n the Keynesian cross model, assume that the consumption function is given by C = 110 + 0.75(Y - T). Planned investment is 300; government purchases is 350. Assume a balanced budget. a. Graph planned expenditure as a function of income.b. What is the equilibrium level of income?c. If government purchases increase to 400, what is the new equilibrium income? What is the multiplier for government purchases? Solve D and Ed. What level of government purchases is needed to achieve an income of 2,200? (Taxes remain unchanged.)e. What level of taxes is needed to achieve an income of 2,200? (Government purchases remain at 350.)
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