Question #280955

Given the demand function P=150 -0.5Q and the total Cost function TC=8Q

A. Maximize profit for a monopoly firm

B. Maximize profit for a perfectly competitive firm

C. Calculate the profit that monopolist lost to act as a perfectly competitive firm


1
Expert's answer
2021-12-19T18:10:38-0500

A. Maximize profit for a monopoly firm


The profit for the monopoly will be at the point where MR=MC


Given the above demand curve, and we know that the marginal revenue is twice as the demand curve, the marginal revenue is equal to

MR=150QMR=150-Q


The marginal cost from the cost function is

MC=8MC=8

Equating MC and MR and solving for Q, we get

150Q=8Q=142150-Q=8\\[0.3cm] Q=142

The price that the monopoly will charge is equal to

P=1500.4(142)P=$79P=150-0.4(142)\\[0.3cm] P=\$79

The profit for the firm is equal to

Profit=(768)142=$10,082\rm Profit=(76-8)142=\$10,082


B. Maximize profit for a perfectly competitive firm

For a perfectly competitive firm, profit will be maximized when P=MC. Therefore

1500.5Q=80.5Q=142Q=284150-0.5Q=8\\[0.3cm] 0.5Q=142\\[0.3cm] Q=284

The maximum profit for perfectly competitive firm is equal to


Profit=(88)84=$0\rm Profit=(8-8)84=\$0


C. Calculate the profit that monopolist lost to act as a perfectly competitive firm

The profit lost by the monopolist is equal to

010082=$10,0820-10082=\$10,082


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