C = Consumption Function, Y is the income in the economy and I = Investment Expenditure

Given Y = C + I, where C = 50 + 0.75Y and I = N45m

Y = 50 + 0.75Y + 45

Y - 0.75Y = 95

Y(1 - 0.75) = 95

Y = \(\frac{95}{0.25}\) = 380

Therefore, the equilibrium level of income = 380m