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 i and pi is the price charged in market i. 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?