6. An open economy is in equilibrium when Y =C+l+G+X-M Y = National Income, C = Consumption Expenditure, 1 = Investment Expenditure, G = Government Expenditure, X= Export Expenditure, M = Import Expenditure. Find the equilibrium national income when C = 80 + 0.8Y, 1 = 70, G = 130, X = 100, M = 50 + 0.2Y