Answer:
10,000
Explanation:
Let the following equations
(1) C = 200 + 0.8Y
(2) AE = C + I
(3) I = 200
In an open economy, equilibrium income equals the sum of aggregate expenditures: consumption + investment
(4) In equilibrium: AE = Y
So aggregating (2) and (4) we have: C + I = Y
solve for Y:
200+ 0.8Y = Y
Then: 0.2Y = 200
Y = 10.000
The equilibrium income is 10,000