A monopolist sells in two markets. The demand curve for her product is given by P1 = 122 - 2x1 in the first market and p2 = 306 - 5x2 in the second market, where Xi is the quantity sold in market and Pi is the price charged in this market. She has a constant marginal cost of production, C = 6 , and no fixed costs. She can charge different prices in the two markets. What is the profit- maximizing combination of quantities for this monopolist