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PERFECT COMPETITION, REVENUE DIVISION: The marginal approach to analyzing a perfectly competitive firm's short-run profit maximizing production decision can be used to identify the division of total revenue among variable cost, fixed cost, and economic profit. The U-shaped cost curves used in this analysis provide all of the information needed on the cost side of the firm's decision. The demand curve facing the firm (which is also the firm's average revenue and marginal revenue curves) provides all of the information needed on the revenue side.

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Lesson 7: Market Equilibrium | Unit 5: The Method Page: 22 of 22

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  • How efficient use of resources can automatically result from the self-correcting tendency of markets to achieve equilibrium.
  • The demand price on the demand curve as the value of goods produced by society.
  • The supply price on the supply curve as the value of goods not produced by society.
  • How too much or too little production generates inequality between the demand price and the supply price, and prevents efficiency.
  • How market imperfections, including the lack of competition and externalities, prevent efficiency.


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LAW OF SUPPLY

The direct relationship between supply price and the quantity supplied, assuming ceteris paribus factors are held constant. This economic principle indicates that an increase in the price of a commodity results in an increase in the quantity of the commodity that sellers are willing and able to sell in a given period of time, if other factors are held constant. The law of supply is an important principle in the study of economics.

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Today, you are likely to spend a great deal of time watching the shopping channel looking to buy either a flower arrangement for your aunt or a birthday greeting card for your uncle. Be on the lookout for door-to-door salesmen.
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In 1914, Ford paid workers who were age 22 or older $5 per day -- double the average wage offered by other car factories.
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