Q. One unit of zinc also one unit of copper are needed to produce a unit of brass. The world's supply of zinc also the world's supply of copper is owned by 2 different monopolists. For simplicity suppose that it costs nothing to mine zinc also copper, that no other inputs are needed to produce brass also that the brass industry operates competitively. Then the price of a unit of brass equals 2 p, where p is? 900 the cost of the inputs used to make it. The demand function for brass is q the price of brass. The zinc also copper monopolists every set a price, believing that the other monopolist will not change its price. Conclude the equilibrium price of brass.