Price Level Aggregate Demand Aggregate Supply 100 10,000 4,000 200 9,000 5,000 300 8,000 5,000 400 7,000 7,000 500 6,000 8,500 600 5,000 9,000 700 4,000 9,500

7000

Explanation:

Generally, we can say a system is at equilibrium when the quantity of goods demanded is the same as the quantity of goods supplied. Therefore, for the given economic system, the equilibrium condition is when the aggregate demand (7000) is equivalent to the aggregate supply (7000) when the price level is 400. Thus, the value of the equilibrium output is 7000.