Mahe, a monopolist, sells his autobiography in two markets. The demand curve for his autobiography is given by p1 = 141 - 3x1 in the first market and p2 = 115 - 2X2 in the second market, where xi is the quantity sold in market i and pi is the price charged in market i. He has a constant marginal cost of production, c = 3, and no fixed costs. He can charge different prices in the two markets. What is the profit-maximizing combination of quantities for Mahe?