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Q P TR MR TC MC 0 11 0 ----- 4 ----- ----- 1 10 10 10 10 60 0 2 9 18 8 14 4 4 3

ID: 1202497 • Letter: Q

Question

Q

P

TR

MR

TC

MC

0

11

0

-----

4

-----

-----

1

10

10

10

10

60

0

2

9

18

8

14

4

4

3

8

24

6

20

6

4

4

7

28

4

27

7

1

5

6

30

2

37

10

-7

In the example above showing Andy’s profit maximizing output decision, you should have found that Joe sets his price above marginal cost (P > MC). We call this the
monopoly mark-up.

a. Can you think of a special case where Andy, despite being a monopoly, would find it profit maximizing to set P = MC?

b. Assume that Andy cannot price discriminate and briefly explain your answer. (hint: consider what makes Andy's case different from a perfectly competitive firm).

c. In general, what will determine the magnitude of the monopoly mark-up (hint: is it better to have a monopoly over bubble gum or water)?

Q

P

TR

MR

TC

MC

0

11

0

-----

4

-----

-----

1

10

10

10

10

60

0

2

9

18

8

14

4

4

3

8

24

6

20

6

4

4

7

28

4

27

7

1

5

6

30

2

37

10

-7

Explanation / Answer

a.

Yes! In a case where she can cut down the costs to that point

b.

Bcoz there is an availability of perfect substitute of the product she produces

c.

Water is a necessary good. From public point of view, water being monopoly is terrible. But from the business point of view, it is profitable