Economics in Funlandia, a closed economy, have collected the following info about the economy for a particular year: NX = 0 Y = 10,000 C = 6,000 T = 1,500 G = 1,700. The economists also estimate that the investment function is: I = 3,300 - 100r; Where r is the country's real interest rate, expressed as a percentage.

Calculate private saving, private saving, national saving, investment, and the equilibrium real interest, budget balance.