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1. Match the terms and their definitions

1.curve

a) a thing that takes the place or function of another

2.substitute

b) the quantity of a commodity or service wanted at a specified price and time

3.supply

c) depending for effectiveness on the relative concentration of two or more substances

4.demand

d) a line defined by an equation so that the coordinates of its points are functions of a single independent variable or parameter

5.competitive

e) the quantities of goods or services offered for sale at a particular time or at one price

  1. Join the halves of the sentences below

1. A perfectly competitive industry

a) that his own actions have no effect on market price.

2. There must be a large number of firms in the industry

b) to be considered as perfectly competitive industry.

3. The firms must be making a reasonably standard product

c) must have many buyers and many sellers.

4. In a perfectly competitive market everyone believes

d) so that each is trivial relative to the industry as a whole.

5. In a perfectly competitive industry all firms must be making essentially the same product,

e) free entry and exit.

6. One more crucial characteristic of a perfectly competitive industry

f) for which they must all charge the same price.

  1. Make up questions to the following sentences

1. Both buyers and sellers believe their own actions affect the market price.

2. Firms in a perfectly competitive industry face a flat demand curve, that being the crucial feature.

3. Even if the car industry had a large number of firms it would not be sensible to view it as a competitive industry.

4. Buyers know that products of different firms in a competitive industry really are identical.

4. Answer the following questions

1. What could a perfectly competitive industry be described as?

2. How does a demand curve look like in a perfectly competitive industry?

3. How many industry characteristics must an economist have in mind?

4. What kind of firms must there be in a competitive industry?

5. What kind of product must the firms produce to be viewed as competitive ones in an industry?

6. What is the third important characteristic of a perfectly competitive industry?

7. Why is it impossible to restrict supply collectively?

8. What is the fourth crucial characteristic of perfect competition?

Speaking

1. Talk to your partner and give one or two examples of a perfectly competitive market where neither buyers nor sellers believe that their own actions affect the market price.

2. So you are aware now that each firm in a competitive industry faces a

horizontal demand curve for its product at the going market price. To be a reasonable description of the demand conditions facing a firm, the industry must have four characteristics:

(1) many firms, each trivial relative to the industry as a whole;

(2) a standardized or homogeneous product, so that it is legitimate to examine the industry as a whole rather than a series of sub-industries each with many fewer firms;

(3) perfect customer information about product quality so that buyers recognize that the identical products of different firms really are the same;

(4) free entry and exit so there is no incentive for existing firms to collude.

Think of the example of some firms and prove they are really perfectly competitive ones using the four characteristics given above.

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