Part III: Work Out Questions Points Price of Teff Price of Wheat In Birr Quantity demanded of Quantity demanded In Birr Teff In quintals of Wheat In quintals A 100 160 18 15 B 150 120 12 19 C 200 80 6 23 1. Based on the given information on the above table:- a) Calculate cross - price elasticity of Teff? b) Calculate cross - price elasticity of Wheat. Are the two goods substitutes or complementary? Why? 2. Suppose the demand and supply functions for Coca are given by:- Qa = 200 -30p and Qs = 20p, respectively. a) Find the equilibrium quantity of coca demanded? b) Find equilibrium price of Coca c) Do you have excess demand or excess supply when price of Coca is 20 Birr? When price of Coca is 50 Birr