ECON 120W Lecture Notes - Lecture 13: Price Discrimination, Economic Surplus

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mauvebeetle363

25 Sep 2020

School

University of Waterloo

Department

Economics

Course

ECON 120W

Professor

Ziss

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Document Summary

Case 1: mc = avc = . Fc = ,000: case 2: mc = avc = . Fc = ,000: case 3: mc = avc = . Price discrimination is : the practice of charging buyers different prices for the same product for non-cost reasons, feasible if the seller can. Prevent re-sale between buyers: profitable because it allows firms to. Lower price to some but not all buyers. Extract more consumer surplus: 3rd degree price discrimination : price based on group characteristic which is related to elasticity (age, location, buying history, time of purchase, hurdle)

Related Questions

1.
A monopolist faces the following demand curve:

Price Quantity Demanded

$51 1

$47 2

$42 3

$36 4

$29 5

$21 6

$12 7

The monopolist has total fixed costs of $60 and has a constantmarginal cost of $15. What is the profit-maximizing level ofproduction?

A) 5 units
B) 3 units
C) 2 units
D) 4 units
2.
A monopolist faces the following demand curve:

Price Quantity Demanded

$10 5

$9 10

$8 16

$7 23

$6 31

$5 49

$4 52

$3 60

The monopolist has total fixed costs of $40 and a constant marginalcost of $5. At the profit-maximizing level of output, themonopolistâs average total cost is

A) $6.74
B) $9.00
C) $7.50
D) $5.82
3.
A monopoly market

A) generally fails to maximize total economic well-being.
B) generally fails to maximize producer surplus.
C) always maximizes total economic well-being.
D) always minimizes consumer surplus.
4.
For a monopoly, the supply curve is a portion of its
A) none of the above; a monopoly does not have a supplycurve.
B) average total cost curve.
C) marginal revenue curve.
D) marginal cost curve.
5.
A monopoly firm can sell 200 units of output for $36.00 per unit.Alternatively, it can sell 201 units of output for $35.80 per unit.The marginal revenue of the 201st unit of output is
A) $â35.80.
B) $4.20.
C) $â4.20.
D) $35.80.
6.
If a monopolist sells 100 units at $8 per unit and realizes anaverage total cost of $6 per unit, what is the monopolist'sprofit?
A) $800
B) $400
C) $600
D) $200
7.
A monopolist is a price
A) setter, and therefore has no demand curve.
B) setter, and therefore has no supply curve.
C) taker, and therefore has no supply curve.
D) setter, and therefore has no variable cost curve.
8.
To define a monopoly, we cite the following characteristics: (i)The firm is the sole seller of its product. (ii) The firmâs productdoes not have close substitutes. (iii) The firm generates a largeeconomic profit. (iv) The firm is located in a small geographicmarket.
A) (ii) and (iv)
B) All of the above are correct.
C) (i) and (ii)
D) (i) and (iii)
9.
Consider a transportation corporation named C.R. Evans that hasjust completed the development of a new subway system in amedium-sized town in the Northwest. Currently, there are plenty ofseats on the subway, and it is never crowded. Its capacity farexceeds the needs of the city. After just a few years of operation,the shareholders of C.R. Evans experienced incredible rates ofreturn on their investment, due to the profitability of thecorporation.

Which of the following statements are most likely to be true? (i)New entrants to the market know they will earn a smaller piece ofthe market than C.R. Evans currently has. (ii) C.R. Evans is mostlikely experiencing increasing average total cost. (iii) C.R. Evansis a natural monopoly.

A) (ii) and (iii)
B) All of the above are correct.
C) (i) and (iii)
D) (i) and (ii)
10.

Quantity
Price
Total Revenue
Average Revenue
Marginal Revenue
1
$35
$35

2

64
32
29
3
$29

4

17
5
$23

11
6

120

7
$17

-1
8

-7
9

99
11
-13
10

80
8

If the monopolist sells 8 units of its product, how much totalrevenue will it receive from the sale?

You wil have to complete the entries in this table to get ananswer. It is a wothwhile exercise and I encourage you to completethe table.

HINT: (a.) Total Revenue = Price x Quantity. (So for quantity of 3x price of $29 = 87 total revenue)

(b) Average Revenue is the same as Price. (So column 2 and column 4would be the same. Calculate to see if that is correct)

(c) Marginal Revenue = Change in TR divided by change in quantity.(You calculated TR = 87 for Q=3. Thus to find MR for Q = 3, findthe change in TR= 87 - 64 and divided by one).

A) 112
B) It cannot be determined from the information provided.
C) 164
D) 40
11.
What conditions need to be present for a firm to be able to use'price discrimination?'
A) Firm should not be perfectly competitive; the market can beseparated according to different elasticities; items can beresold
B) Firm should be perfectly competitive; the market can beseparated according to different elasticities; resale of the itemsis not possible.
C) Firm should not be perfectly competitive; buyers should havesame elasticities;; resale of the items is not possible.
D) Firm should not be perfectly competitive; the market can beseparated according to different elasticities; resale of the itemsis not possible.
12.
If the government regulates the natural monopoly by asking it tocharge a price that is equal to its marginal cost (P=MC) theregulated monopoly will -------- so instead the government ends upletting it charge a price equal to its ------
A) have a profit; fixed cost
B) have a profit; average cost
C) have a loss; variable cost
D) have a loss; average cost

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ECON 120W Lecture Notes - Lecture 13: Price Discrimination, Economic Surplus

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