The demand and supply functions for two interdependent commodities are given by where Q Di , Q

Question:

The demand and supply functions for two interdependent commodities are given by Qp, = 100 – 2P, + P; — 5 + 2P, - ЗР. Os, = -10 + P, Os, = -5 + 6P, where Q_Di, Q_Si and P_i denote the quantity demanded, quantity supplied and price of good i, respectively. Determine the equilibrium price and quantity for this two-commodity model.