Answer:
Part 1. When real GDP is equal to $4,500, aggregate expenditure is equal to <u>$4,600</u>.
Part 2. When real GDP is equal to $5,000, aggregate expenditure is equal to <u>$5,000</u>.
Part 3. When real GDP is equal to $5,500, aggregate expenditure is equal to <u>$5,400</u>.
Explanation:
The aggregate expenditure (AE) can be calculated using the following formula:
AE = (A + (MPC * Y)) + PI + G + NX ………………. (1)
Where;
AE = aggregate expenditure = ?
A = Autonomous consumption = $500
MPC = Marginal propensity to consume = 0.80
Y = Real GDP
PI = Planned investment = $600
G = Government spending = $300
NX = Net exports = -$400
Based on the above, we can now proceed as follows:
Part 1. When real GDP is equal to $4,500, aggregate expenditure is equal to $ _____.
This implies that:
Y = Real GDP = $4,500
Substituting this and other values given above into equation (1), we have:
AE = ($500 + (0.80 * $4,500)) + $600 + $300 - $400 = $4,600
Therefore, when real GDP is equal to $4,500, aggregate expenditure is equal to <u>$4,600</u>.
Part 2. When real GDP is equal to $5,000, aggregate expenditure is equal to $ _____.
This implies that:
Y = Real GDP = $5,000
Substituting this and other values given above into equation (1), we have:
AE = ($500 + (0.80 * $5,000)) + $600 + $300 - $400 = $5,000
Therefore, when real GDP is equal to $5,000, aggregate expenditure is equal to <u>$5,000</u>.
Part 3. When real GDP is equal to $5,500, aggregate expenditure is equal to $ _____.
This implies that:
Y = Real GDP = $5,500
Substituting this and other values given above into equation (1), we have:
AE = ($500 + (0.80 * $5,500)) + $600 + $300 - $400 = $5,400
Therefore, when real GDP is equal to $5,500, aggregate expenditure is equal to <u>$5,400</u>.
