The economic data of a country is known as follows: Consumption function = C = 600 + 0.8Yd Planned investment = I = 100 Government spending = G = 200 Export = X = 80 Imports = M = 0.05 Y Tax = Tx = 200 Define: a. The magnitude of the national income balance ? b. Earnings ready to spend ? c. The magnitude of the consumption balance ? d. The amount of balance savings ? e. Big imports ?