Answer:
$100 billion
Explanation:
Real GDP is currently = $13.55 trillion
Potential real GDP = $14.0 trillion
Gap = $500 billion
Government purchases multiplier = 5.0
Tax multiplier = 4.0
To increase aggregate demand by $500 billion, the required increase in government expenditure is:
= (1 ÷ government purchases multiplier) × change in aggregate demand
= (1 ÷ 5) × $500
= $100 billion
Therefore, the government expenditure need to be increased by $100 billion.