QUESTION 8 Tropicana is a closed economy, described by the following equations: Y =C+I+G Y = 3000 G= 1500 T=2000 C=200+0.8(Y-T) 1=750-6250r Solve for the following values. a. Private saving private b. Public saving S= c. National saving ( S) = d. Investment ( 1) = e. Real interest rate ( r) = (Note: Provide this answer as a fraction rounded to two decimal places, e.g. 0.05.)