The spreadsheet lists real GDP (Y) and the components of...

The spreadsheet lists real GDP $(Y)$ and the components of aggregate planned expenditure in billions of dollars. $$\begin{array}{|c|c|c|c|c|c|c|c|} \hline & \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} & \mathrm{E} & \mathrm{F} & \mathrm{G} \\ \hline 1 & & \mathrm{Y} & \mathrm{C} & 1 & \mathrm{G} & \mathrm{X} & \mathrm{M} \\ \hline 2 & \mathrm{A} & 100 & 110 & 50 & 60 & 60 & 15 \\ \hline 3 & \mathrm{B} & 200 & 170 & 50 & 60 & 60 & 30 \\ \hline \mathbf{4} & \mathrm{C} & 300 & 230 & 50 & 60 & 60 & 45 \\ \hline 5 & \mathrm{D} & 400 & 290 & 50 & 60 & 60 & 60 \\ \hline 6 & E & 500 & 350 & 50 & 60 & 60 & 75 \\ \hline 7 & F & 600 & 410 & 50 & 60 & 60 & 90 \\ \hline \end{array}$$ a. What is aggregate planned expenditure when real GDP is $\$ 200$ billion? b. If real GDP is $\$ 200$ billion, explain the process that moves the economy toward equilibrium expenditure. c. If real GDP is $\$ 500$ billion, explain the process that moves the economy toward equilibrium expenditure.

The spreadsheet lists real GDP $(Y)$ and the components of aggregate planned expenditure in billions of dollars.
$$\begin{array}{|c|c|c|c|c|c|c|c|}
\hline & \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} & \mathrm{E} & \mathrm{F} & \mathrm{G} \\
\hline 1 & & \mathrm{Y} & \mathrm{C} & 1 & \mathrm{G} & \mathrm{X} & \mathrm{M} \\
\hline 2 & \mathrm{A} & 100 & 110 & 50 & 60 & 60 & 15 \\
\hline 3 & \mathrm{B} & 200 & 170 & 50 & 60 & 60 & 30 \\
\hline \mathbf{4} & \mathrm{C} & 300 & 230 & 50 & 60 & 60 & 45 \\
\hline 5 & \mathrm{D} & 400 & 290 & 50 & 60 & 60 & 60 \\
\hline 6 & E & 500 & 350 & 50 & 60 & 60 & 75 \\
\hline 7 & F & 600 & 410 & 50 & 60 & 60 & 90 \\
\hline
\end{array}$$
a. What is aggregate planned expenditure when real GDP is $\$ 200$ billion?
b. If real GDP is $\$ 200$ billion, explain the process that moves the economy toward equilibrium expenditure.
c. If real GDP is $\$ 500$ billion, explain the process that moves the economy toward equilibrium expenditure.

Key Concepts

Goods Market Equilibrium

Goods market equilibrium occurs when aggregate planned expenditure equals the actual output (real GDP) produced in the economy. At this point, there is no unplanned change in inventories, meaning that what is produced is exactly what is sold. This balance is crucial for the stability of an economy, as it indicates that there is neither excessive unsold goods (leading to production cuts) nor shortages (prompting businesses to increase production).

Multiplier Effect

The multiplier effect is a key concept in understanding how initial changes in aggregate expenditure can lead to larger changes in real GDP. When there is an increase (or decrease) in spending, it triggers subsequent rounds of re-spending which cumulatively amplify the initial impact. This effect is essential in analyzing how policy measures or shifts in autonomous spending components affect the overall level of economic activity.

Aggregate Planned Expenditure

This concept refers to the total amount that households, firms, the government, and foreign buyers plan to spend on goods and services at a given level of real GDP. It is a central component in macroeconomic analysis and is used to determine the level of economic activity in the economy. By adding together planned consumption, government spending, investment, and net exports, policymakers can evaluate whether the economy is in balance or if there may be an over- or under-production of goods and services.

Adjustment Mechanism Toward Equilibrium

The adjustment mechanism explains how the economy moves toward equilibrium when aggregate expenditure does not initially equal real GDP. If planned spending is lower than the actual output, firms experience an unintended buildup of inventories, prompting them to reduce production in future periods. Conversely, if planned expenditure exceeds output, inventories will fall unexpectedly, encouraging firms to boost production. This process continues until output adjusts to match planned spending, thereby restoring equilibrium in the goods market.

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