Return to question Suppose the quantity demanded of good X (Qd) depends only on the price of good X (P), monthly income (M), and the price of a related good R (PR) and M is $80,000 and PR is $100: Qd= 30,000 -1,000P + 0.25M + 5PR Qs = - 10,000 + 2,000 p Total consumer surplus in equilibrium is Total producer surplus in equilibrium is The net gain to society created by the market for good X is Multiple Choice $100,820; $151,230; $252,050