LaunchPad for Krugman's Macroeconomics (Six Month Access)
LaunchPad for Krugman's Macroeconomics (Six Month Access)
4th Edition
ISBN: 9781319011024
Author: Paul Krugman, Robin Wells
Publisher: Worth Publishers
Question
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Chapter 11, Problem 12P
To determine

Concept Introduction:

Gross Domestic Product: It is defined as the money value of all finished goods and services that are produced by the normal resident and nonresident of the country inside the boundary of a country usually for one year.

The formula to calculate change in GDP is,

    LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  1

Here,

  • LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  2is autonomous spending.
  • MPC is marginal propensity to consume.

Marginal Propensity to Consume ( MPC ): It is defined as the change which occurs in total consumption level due to change in income.

The formula to calculate MPC is

    LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  3

Here,

  • LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  4is change in income.
  • LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  5is change in consumption level.
  • MPC is marginal propensity to consume.

Multiplier: It is defined as the ratio of total change in gross domestic product due to change in the autonomous spending.

The formula to calculate multiplier is,

    LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  6

Here,

  • MPC is marginal propensity to consume.

Aggregate Consumption Level ( C ): It is defined as the consumption of whole economy

The formula to calculate change in aggregate spending is,

    LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  7

Here,

  • LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  8is change in consumption.
  • LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  9is change in income.
  • MPC is marginal propensity to consume.

Consumption Function: It shows how the change in disposable income of an individual changes the consumption level.

The formula to calculate consumption function is,

    LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  10

Here,

  • C is consumption level.
  • LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  11is autonomous consumption.
  • LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  12is disposable income
  • MPC is marginal propensity to consume.

Planned Aggregate Spending: It is the summation of consumption level in an economy and the planned investment.

The formula to calculate planned aggregate spending is,

    LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  13
Here,
  • C is consumption level.
  • LaunchPad for Krugman's Macroeconomics (Six Month Access), Chapter 11, Problem 12P , additional homework tip  14is the planned investment spending.
  • AE is the planned aggregate spending.

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