ECON 2100 Lecture Notes - Lecture 8: Laissez-Faire, Market Failure, Invisible Hand

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23 Sep 2016
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Chapter 7- consumers, producers, and the efficiency of markets cont. A seller will produce and sell the good/service only if the price exceeds cost. At each q, the height of the s curve is the cost of the marginal seller, the seller who would leave the market if the price were any lower. Producer surplus (ps): the amount a seller is paid for a good minus the seller"s cost; ps=p-cost. Total ps equals the area above the supply curve under the price, from 0 to q. Ps is the area b/w p and the s curve. How a lower price reduces ps-fall in ps due to remaining sellers getting lower p & fall in ps due to sellers leaving market. The market"s allocation is efficient because it can maximize total surplus i. e. the social welfare. Total surplus= (value to buyers) (cost to sellers)

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