Cost figures for a hypothetical firm are given in the following table. Use them for the exercises below. The firm is selling in a perfectly competitive market. Output Fixed AFC Variable AVC Total ATC MC   Cost   Cost   cost     1 $50  50/1=50 $30 30/1=30  30+50=80 80/1=80   NA 2 $50  50/2=25 $50 50/2=25   50+50=100 100/2=50  (100-80)/(2-1)=20 3 $50  50/3=16.67 $80 80/3=26.67  50+80=130 130/3=43.33   (130-100)/(3-2)=30 4 $50  50/4=12.50 $120 120/4=30   50+120=170 170/4=42.50  (170-130)/(4-3)=40 5 $50  50/5=10 $170  170/5=34 50+170=220  220/5=44  (220-170)/(5-4) =50   What can you expect from an industry in perfect competition in the long run? That is, what will the price be? What quantity will be produced? What will be the relation between marginal cost, average cost, and price?

Essentials of Economics (MindTap Course List)
8th Edition
ISBN:9781337091992
Author:N. Gregory Mankiw
Publisher:N. Gregory Mankiw
Chapter12: The Cost Of Production
Section: Chapter Questions
Problem 7PA
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  1. Cost figures for a hypothetical firm are given in the following table. Use them for the exercises below. The firm is selling in a perfectly competitive market.

Output

Fixed

AFC

Variable

AVC

Total

ATC

MC

 

Cost

 

Cost

 

cost

 

 

1

$50

 50/1=50

$30

30/1=30

 30+50=80

80/1=80 

 NA

2

$50

 50/2=25

$50

50/2=25 

 50+50=100

100/2=50

 (100-80)/(2-1)=20

3

$50

 50/3=16.67

$80

80/3=26.67

 50+80=130

130/3=43.33 

 (130-100)/(3-2)=30

4

$50

 50/4=12.50

$120

120/4=30 

 50+120=170

170/4=42.50

 (170-130)/(4-3)=40

5

$50

 50/5=10

$170

 170/5=34

50+170=220 

220/5=44 

(220-170)/(5-4) =50

 

What can you expect from an industry in perfect competition in the long run? That is, what will the price be? What quantity will be produced? What will be the relation between marginal cost, average cost, and price?

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