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Lecture

Chapter 7.docx

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Department
Economics
Course
ECON 1B03
Professor
Bridget O' Shaughnessy
Semester
Winter

Description
Markets and Economic Welfare - Objective 1: Consumer Surplus and Producer Surplus 4.1.1 Consumer Surplus The concept of willingness to pay relates to the maximum amount a consumer will pay for a product. Consumer surplus, therefore, is a consumer’s willingness to pay, minus the amount actually paid for a product. Graphically, the area below the demand curve and above the price measures the consumer surplus in a market. A reduction in the product’s price raises consumer surplus due to two reasons. First, existing buyers now pay a lower price, and second, a lower price induces new buyers to enter the market. The concept of consumer surplus is a good measure of economic well-being because it incorporates the preference of buyers by examining their willingness to pay. 4.1.2 Producer Surplus Let us now evaluate the benefits received by the other group participating in the market: the producers. Producer surplus is the amount a seller receives for a product, minus its cost. Graphically, the area below the price and above the supply curve measures the producer surplus in a market. Also, note that an increase in the product’s price raises producer surplus due to two reasons. First, existing sellers now receive more for their product, and second, a higher price induces new sellers to enter the market. The concept of producer surplus is a good measure of economic well-being of producers. The economic well-being of society would be maximized by generating the most surplus for its two groups—consumers and producers. The next section examines why the free market is considered to be the best way to maximize the sum of consumer and producer surplus in the economy. 4.2.1 Evaluating Market Equilibrium Let us evaluate market equilibrium by highlighting important details from Chapter 7 in the textbook (p. 157, Figure 7.7). This figure is reproduced below as Figure 4.1. Figure 4.1: Con
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