25. Adding Demand and Supply Curves Horizontally

This video demonstrates the concept of summing horizontally to obtain market demand and supply curves using a concrete example. In particular, I show how to aggregate the demands of two types of consumers to a market demand, and how to aggregate the supply curves of identical firms to a market supply. At the end, I find the equilibrium price and quantity. The video is a nice application of various tools in the microeconomist's toolkit. For a list of videos and links to these videos (organized by topic), check out the Intromediate Microeconomics video web page: http://blog.thisyoungeconomist.com/p/...