Market Structures, Competition, and Regulation
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Evidence for analysis
Monopoly equilibrium: MR = MC
Quantity
Price / cost
Q* = ?
D
MR
MC = 20
Evidence
Value
Demand
P = 100 - Q
Marginal revenue
MR = 100 - 2Q
Marginal cost
MC = 20
A monopolist faces P=100-Q and MC=20. What output maximises profit?
Select one option.
A
20
B
30
C
40
D
50
E
80
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