Economists in Funlandia, a closed economy, have collected the following information about the economy for a particular year:

Y = 10,000 C = 6,000 T = 1,500 G = 1,700 The economists also estimate that the investment function is:

I = 3,300 – 100 r where r is the country’s real interest rate, expressed as a percentage. Calculate private saving, public saving, national saving, investment, and the equilibrium real interest rate.