1. Suppose a monopolist M sells two products, X and Y. . Demand for X is qX = 1000 - pX - 1/2pY . Demand for Y is qY = 1000 - pY - 1/2pX a) If the marginal costs of both X and Y are zero, what are profit maximizing prices? b) If X was sold by a separate firm, but at the same price as you found in b, would M raise or lower its price for X