If Castor's demand curve is described by q = 40

Question

If Castor's demand curve is described by q = 40 - p and Pollux's demand curve is given by q = 60 - 2p, then each of their demand curves will pass through the point q = 20, p = 20. Therefore if they are the only two consumers in a market, the market demand curve will also pass through q = 20, p = 20.

Quizplus · Accepted Answer

The market demand curve is not simply the sum of individual demand curves, but rather reflects the total demand of all consumers in the market. Therefore, it cannot be assumed that the market demand curve will pass through the same point as the individual demand curves.