BAI HOC - economicsfamily ď CHAPTER 14

This table shows the total revenue and total cost data for a perfectly competitive firm.. The short-run market supply curve in a perfectly competitive industry a?. ANSWER: a shows the to

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Firms in Competitive Markets

1 One of the defining characteristics of a perfectly competitive market is

a a small number of sellers

b a large number of buyers and a small number of sellers

c a standardized product

d significant advertising by firms to promote their products

ANSWER: c a standardized product

SECTION: 1 OBJECTIVE: 1

2 Which of the following firms is the closest to being a perfectly competitive firm?

a a hot dog vendor in New York

b Microsoft Corporation

c Ford Motor Company

d the campus bookstore

ANSWER: a a hot dog vendor in New York

3 Java Joe sells 200 cups of coffee each day in a perfectly competitive market at the market price of

$1.00 per cup If Java Joe independently decreased its price per cup to $0.75,

a its sales would rise to 250 cups

b its revenues would decrease

c its revenues would remain constant at $200

d the market price would fall to $0.75 as other sellers match Java Joe’s price

ANSWER: b its revenues would decrease

4 If the market elasticity of demand for potatoes is –.3, then the individual farmer’s elasticity of demand

a is also –.3

b depends on how large a crop she produces

c will range between –.3 and –1.0

d will be infinite

ANSWER: d will be infinite

5 Perfect competition may be defined as competition

a among price-taking sellers

b among buyers with perfect information about the market

c among sellers of high-quality products

d in a market where prices adjust quickly to the long-run equilibrium

ANSWER: a competition among price-taking sellers

6 Free entry means that

a there are no costs of entering into an industry

b no legal barriers prevent a firm from entering an industry

c a firm’s marginal cost is zero

d a firm has no fixed costs in the short run

ANSWER: b no legal barriers prevent a firm from entering an industry

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7 This table describes the relationship between output, marginal revenue, and marginal cost If the firm is currently producing 14 units, what would you advise them to do?

a decrease quantity to 13

b increase quantity to 15

c remain at 14 units

d increase quantity to 16 units

ANSWER: d increase quantity to 16 units

Unit Marginal Marginal

Quantity Cost Revenue

12 $5.00 $9.00

13 $6.00 $9.00

14 $7.00 $9.00

15 $8.00 $9.00

16 $9.00 $9.00

17 $10.00 $9.00

8 This table describes the relationship between output, marginal revenue, and marginal cost If the firm is maximizing profit, how much profit is it earning?

a 0

b $1.00

c $16.00

d There is not sufficient data to determine firm profitability

ANSWER: d There is not sufficient data to determine firm profitability

9 Cold Duck Airlines flies between Tacoma and Portland The company leases planes on a year-long contract at a cost that averages $600 per flight Other costs (fuel, flight attendants, etc.) amount to

$550 per flight Currently, Cold Duck’s revenues are $1,000 per flight All prices and costs are expected to continue at their present levels If it wants to maximize profit, Cold Duck Airlines should

a drop the flight immediately

b continue the flight

c continue flying until the lease expires and then drop the run

d drop the flight now but renew the lease if conditions improve

ANSWER: c continue flying until the lease expires and then drop the run

10 Raiman’s Shoe Repair also produces custom-made shoes When Mr Raiman produces 12 pairs a week, the MC of the twelfth pair is $84, and the MR of that unit is $70 What would you advise Mr Raiman to do?

a shut down

b produce more custom-made shoes

c decrease the price

d produce fewer custom-made shoes

ANSWER: d produce fewer custom-made shoes

11 Carla’s Candy Store is maximizing profits by producing 1,000 pounds of candy per day If Carla’s fixed costs unexpectedly increase and the market price remains constant, then the

profit-maximizing level of output

a is less than 1,000 pounds

b is still 1,000 pounds

c is more than 1,000 pounds

d becomes zero

ANSWER: b is still 1,000 pounds

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12 The firm will make the most profits if it produces that quantity of output for which

a marginal cost equals average cost

b profit per unit is greatest

c marginal revenue equals total revenue

d marginal revenue equals marginal cost

ANSWER: d marginal revenue equals marginal cost

13 This table shows the total revenue and total cost data for a perfectly competitive firm The profit earned at the profit-maximizing output level is

a $80

b $10

c $0

d $15

ANSWER: d $15

Total Total Output Revenue Cost

1 $ 20 $ 40

2 40 60

3 60 70

4 80 80

5 100 85

6 120 110

14 Joe’s Garage operates in a perfectly competitive market At the point where marginal cost equals marginal revenue, ATC = $20, AVC = $15, and the price per unit is $10 In this situation,

a Joe’s Garage will break even

b Joe’s Garage will shut down immediately

c Joe’s will lose money in the short run, but stay in business

d the market price will fall in the short run

ANSWER: b Joe’s Garage will shut down immediately

15 If there is an increase in market demand in a perfectly competitive market, then in the short run

a there will be no change in the demand curves faced by individual firms in the market

b the demand curves for firms will shift downward

c the demand curves for firms will become more elastic

d profits will rise

ANSWER: d profits will rise

16 A sunk cost is one that

a changes as the level of output changes in the short run

b was paid in the past and will not change regardless of the present decision

c should determine the rational course of action in the future

d has the most impact on profit-making decisions

ANSWER: b was paid in the past and will not change regardless of the present decision

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17 A corporation has been steadily losing money on one of its product lines The factory used to produce that brand cost $20 million to build 10 years ago The firm now is considering an offer to buy that factory for $15 million Which of the following statements about the decision to sell or not

to sell is correct?

a The firm should turn down the purchase offer because the factory cost more than $15 million to build

b The $20 million spent on the factory is a sunk cost that should not affect the decision

c The $20 million spent on the factory is an implicit cost, which should be included in the

decision

d The firm should sell the factory only if it can reduce its costs elsewhere by $5 million

ANSWER: b The $20 million spent on the factory is a sunk cost that should not affect the decision SECTION: 2 OBJECTIVE: 4

18 The short-run market supply curve in a perfectly competitive industry

a shows the total quantity supplied by all firms at each possible price

b is perfectly inelastic at the market price

c is perfectly elastic at the market price

d is usually downward-sloping

ANSWER: a shows the total quantity supplied by all firms at each possible price

19 Tommy’s Tires operates in a perfectly competitive market If tires sell for $50 each and ATC = $40 per tire at the profit-maximizing output level, then in the long run

a more firms will enter the market

b some firms will exit from the market

c the equilibrium price per tire will rise

d average total costs will fall

ANSWER: a more firms will enter the market

20 If all firms have the same costs of production, then in long-run equilibrium,

a price exceeds all firms’ average cost

b price exceeds all firms’ marginal cost

c some firms have positive profits

d all firms have zero profits and just cover their opportunity costs

ANSWER: d all firms have zero profits and just cover their opportunity costs

21 When market conditions in a competitive industry are such that firms cannot cover their

production costs, then

a the firms will suffer long-run economic losses

b the firms will suffer short-run economic losses that will be exactly offset by long-run economic profits

c some firms will go out of business, causing prices to rise until the remaining firms can cover their production costs

d all firms will go out of business, since consumers will not pay prices that enable firms to cover their production costs

ANSWER: c some firms will go out of business, causing prices to rise until the remaining firms can cover their production costs

22 The market price in a perfectly competitive industry in short-run equilibrium is $3 and the

minimum average cost for all firms is $2.50 In the long run, we would expect an increase in

a each firm’s output

b the number of firms

c each firm’s profit

d each firm’s average costs

ANSWER: b the number of firms

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23 If occupational safety laws were changed so that firms no longer had to take expensive steps to meet regulatory requirements, we should expect that

a the demand for the products of this industry would increase

b the market price of the products of this industry would decrease in the short run but not in the long run

c the firms in the industry would make a long-run economic profit

d competition would force producers to pass the lower production costs on to consumers in the long run

ANSWER: d competition would force producers to pass the lower production costs on to consumers in the long run

24 The textile industry is composed of a large number of small firms In recent years, these firms have suffered economic losses and many sellers have left the industry Economic theory suggests that these conditions will

a shift the demand curve outward so that price will rise to the level of production cost

b cause the remaining firms to collude so that they can produce more efficiently

c cause the market supply to decline and the price of textiles to rise

d cause firms in the textile industry to suffer long-run economic losses

ANSWER: c cause the market supply to decline and the price of textiles to rise

25 In a perfectly competitive market, the horizontal sum of all the individual firms’ supply curves is

a zero

b equal to the industry profits

c the market supply curve

d a horizontal line

ANSWER: c the market supply curve

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