competitive industry, with side-by-side graphs for the industry and a firm within that industry. Now, draw your own graphs showing a similar adjustment to a decrease in demand. i)What would happen to price and industry output in the short-run? ii) How would an individual firm respond? iii) Over time, would we have entry or exit in the industry? Why? What would then happen to the pri and output?

ENGR.ECONOMIC ANALYSIS
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ISBN:9780190931919
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Chapter1: Making Economics Decisions
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2)Figure 7.3 shows the short-run and long-run adjustment to an increase in demand for a purely
competitive industry, with side-by-side graphs for the industry and a firm within that industry.
Now, draw your own graphs showing a similar adjustment to a decrease in demand.
i) What would happen to price and industry output in the short-run?
ii) How would an individual firm respond?
iii) Over time, would we have entry or exit in the industry? Why? What would then happen to the price
and output?
Transcribed Image Text:2)Figure 7.3 shows the short-run and long-run adjustment to an increase in demand for a purely competitive industry, with side-by-side graphs for the industry and a firm within that industry. Now, draw your own graphs showing a similar adjustment to a decrease in demand. i) What would happen to price and industry output in the short-run? ii) How would an individual firm respond? iii) Over time, would we have entry or exit in the industry? Why? What would then happen to the price and output?
P
PE2
PEL
0
S₂
*
D₂
A
0
B
MC
ATC
D₂ = P₂ = MR₂
D₁ = P₁ = MR₁
QE1 E2 E3
Q
(a) Change in Demand in the Perfectly
Competitive Industry or Market.
FIGURE 7.3 Long-Run Adjustment in Perfect Competition: Entry and Exit
Q1 Q2
Q
(b) Change in Demand for the Perfectly
Competitive Individual Firm.
Transcribed Image Text:P PE2 PEL 0 S₂ * D₂ A 0 B MC ATC D₂ = P₂ = MR₂ D₁ = P₁ = MR₁ QE1 E2 E3 Q (a) Change in Demand in the Perfectly Competitive Industry or Market. FIGURE 7.3 Long-Run Adjustment in Perfect Competition: Entry and Exit Q1 Q2 Q (b) Change in Demand for the Perfectly Competitive Individual Firm.
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