Individual Demand Curves and the Market Demand CurveDarla and Dino are the only two consumers of blue jeans in the market. Panel (a) shows Darla’s individual demand curve: the number of pairs of jeans she will buy per year at any given price. Panel (b) shows Dino’s individual demand curve. Given that Darla and Dino are the only two consumers, the market demand curve, which shows the quantity of blue jeans demanded by all consumers at any given price, is shown in panel (c). The market demand curve is the horizontal sum of the individual demand curves of all consumers. In this case, at any given price, the quantity demanded by the market is the sum of the quantities demanded by Darla and Dino.