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Where the quantities demanded and supplied are equal.

Supplies and Demands Are Independent | ПРЕДЛОЖЕНИЕ И СПРОС: РЫНОЧНОЕ РАВНОВЕСИЕ | ОБЩЕЕ РАВНОВЕСИЕ И ЭКОНОМИЧЕСКОЕ БЛАГОСОСТОЯНИЕ |


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  2. A shortage is the excess of quantity demanded over quantity supplied when the price is below equilibrium.
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LESSON 7

EðRðE phrases (to be written out from the English text) for translation by ear.

Revise the topical vocabulary concentrating on the underlined parts of the text.

Make sure you will be able to translate these from Russian into English.

MARKET EQUILIBRIUM

It's easy to train economists. Just teach a parrot to say "Supply and Demand”. Thomas Carlyle

Buyers and sellers use prices to signal their re­spective wants and then exchange money for goods or resources, or vice versa. You accept or reject thousands of offers during every trip to a shopping center or perusal of a newspaper. Prices efficiently transmit incredible amounts of information that isrelevant for decisions to buy or sell and make a lot of other information (or misinformation) irrelevant. For example, dur­ing the nineteenth century, Ghanians exported cocoa to England, believing that the British used it for fuel. Their mistake was not a problem, however, because their decision to produce de­pended on the price of cocoa, not its final use. Supply and demand jointly determine prices and quantities so that markets achieve equilibrium.

In an equilibrium, any pressures for change must be offset by opposing forces.

All sciences, including economics, use this pow­erful concept extensively. Astronomers, for ex­ample, describe the moon as following a fairly stable equilibrium path as it circles our earth. But what creates an equilibrium in a market?

Suppose every potential buyer and seller of a good submitted demand and supply schedules to an auctioneer, who then calculated the price at which the quantities demanded and supplied were equal. All buyers' demand prices (the max­imum they are willing to pay) and all sellers' sup­ply prices (the minimum they will accept per unit for a given amount) are equal. There is mar­ket equilibrium, so the market clears.

Market equilibrium occursat the price-quantity combination

where the quantities demanded and supplied are equal.

The amounts buyers will purchase at the equi­librium price exactly equal the amounts produc­ers are willing to sell. Let's examine the sense in which this is an equilibrium.

Figure 11 summarizes the market supplies and demands for paperbacks. (Note that there are more buyers and sellers than in our earlier examples.) After studying the supply and de­mand schedules, our auctioneer ascertains thatat $5 per book the quantities demanded and sup­plied both equal 300 million books annually. Sellers will provide exactly as many novels as readers will buy at this price, so the market clears.

But what if the auctioneer set a price of $6 per book, or $4 per book? First, let us deal with the problem of a price set above equilibrium.


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Экономика. Практикум. Н.З.Волчек, Ю.А.Огибин, М.А.Скляр| A shortage is the excess of quantity demanded over quantity supplied when the price is below equilibrium.

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