A closed economy has income Y of 1200, consumption C of 800, government purchases G of 200, and taxes T of 150. Investment is determined by the equation / = 300 – 20r. a. Calculate national saving. National saving = 200 b. Calculate public saving. Public saving = -50 c. Calculate private saving. Private saving = 250 d. Calculate equilibrium interest rate. Equilibrium interest rate = e. If the government increases its purchases to 240, what is the new equilibrium interest rate? New equilibrium interest rate =

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Public Saving

Public saving deals with the amount which has been in excess after meeting all the obligatory expenses and investment of the government. Taxes are collected by the government to meet its day-to-day expenditures. The obligatory expenses include all those expenses which are mandatory for the government. It cannot be avoided as it is inevitable.