Consider an economy described by the following equations:

Y = C + I + G,

Y = 5,000,

G = 1,000,

T = 1,000,

C = 250 + 0.75(Y - T ),

I = 1,000 - 50 r.

6. In this economy, compute private saving, public saving, and national saving.

7. Find the equilibrium interest rate (measured in percentage points).