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LONG-RUN ADJUSTMENT: The combined adjustment of an industry and of each firm in the industry to an equilibrium condition that based on (1) profit maximization when all inputs are variable and (2) the entry and exit of firms. The complete adjustment is undertaken by both perfect competition and monopolistic competition. There are two parts of this adjustment process. One is the adjustment of each firm to the appropriate factory size that maximizes long-run profit. The other is the entry of firms into the industry or exit of firms out of the industry, to eliminated economic profits or economic losses. The end result of this long-run adjustment is different for the two market structures based on the fact that perfect competition has equality between price and marginal revenue, while monopolistic competition does not.

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Lesson 7: Market | Unit 4: Adjustment Page: 15 of 22

Topic: Surplus <=PAGE BACK | PAGE NEXT=>

A surplus exists if the quantity demanded is less than the quantity supplied at the current market price.
  • A surplus exists if the market price is 70 cents.
  • The quantity demanded is 200 tapes and the quantity supplied is 600 tapes, giving a surplus of 400 tapes.
  • This surplus induces the price to decline down to the equilibrium level of 50 cents

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PRICE

An asset or item voluntarily exchanged in a market transaction for another asset or item. This item or asset is usually, but not necessarily, money. A barter transaction occurs if money is NOT one of the assets or items exchanged. In a standard market diagram, price is displayed on the vertical axis.

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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway hoping to buy either a bottle of blackcherry flavored spring water or a travel case for you toothbrush. Be on the lookout for jovial bank tellers.
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The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
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