Monopoly faces a demand P=24-q and MC=12. The firm can develop a cost-saving innovation that would lower its costs to MC=8. How much would monopoly gain from innovating?
Profit is maximized where marginal revenue is equal to marginal cost
Marginal revenue can be calculated from the demand function by doubling the coefficient of Q
Demand Function
P = 24 - q
Marginal Revenue
MR = 24 - 2q
Equating both MR and MC
24 - 2q = 12
q =6
Price can be calculated from the demand function
P = 24 - q
P = 24 - 6
P = 18
Total Revenue = Price x Quantity
Total Revenue = 18 x 6
Total Revenue = 108
When MC is 8
Equating both MR and MC
24 - 2q = 8
q =8
Price can be calculated from the demand function
P = 24 - q
P = 24 - 8
P = 16
Total Revenue = Price x Quantity
Total Revenue = 16 x 8
Total Revenue = 128
Hence the total revenue will increase by $20 (128 - 108)
The monopoly gain from innovating is $20
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