Question

In: Economics

Consider a market with a demand curve given (in inverse form) by P(Q)=50−0.25QP(Q)=50−0.25Q, where QQ is...

Consider a market with a demand curve given (in inverse form) by P(Q)=50−0.25QP(Q)=50−0.25Q, where QQ is total market output and PP is the price of the good. Two firms compete in this market by sequentially choosing quantities q1q1 and q2q2 (where q1+q2=Qq1+q2=Q).

This is an example of:

Choose one:

A. Cournot competition.

B. Bertrand competition.

C. perfect competition.

D. Stackelberg competition.

Part 2(4 pts)

Now suppose the cost of production is constant at $20.00 per unit (and is the same for both firms). If the two firms are maximizing profit, the leader will produce_________ units and the follower will produce ______ units. The total amount of production will be _______ units and the price of the good will be ________ $ . (Give all numerical answers to two decimal places.)

Solutions

Expert Solution

Ans. As the firms compete on quantity which they set simultaneously, so, this is an example of Cournot competition.

b) Assuming firm 1 is the leader.

Demand function, P = 50 - 0.25(q1 +q2)

Total revenue of firm 2, TR2 = P*q2 = 50q2 - 0.25q1q2 - 0.25q22

and

Marginal revenue, MR2 = dTR2/dq2 = 50 - 0.25q1 - 0.5q2

Marginal cost, MC = 20

At equilibrium, MR2 = MC

=> 50 - 0.25q1 - 0.5q2 = 20

=> q2 = 60 - 0.5q1 —> BR2

Substituting BR2 in demand function, we get,

P = 50 - 0.25q1 - 0.25(60 - 0.5q1) = 35 - 0.125q1

Total revenue, TR1 = P*q1 = 35q1 - 0.125q12

=> Marginal revenue, MR1 = dTR1/dq1 = 35 - 0.25q1

At equilibrium, MR1 = MC

=> 35 - 0.25q1 = 20

=> q1 = 60 units

Substituting this value in BR2, we get,

q2 = 30 units

and demand function gives the price, P = $27.5

Profit of firm 1 = TR1 - 20*q1 = $450

Profit of firm 2 = TR2 - 20*q2 = $225

Thus, the leader will produce 60 units and follower will produce 30 units. Total production will be 90 units at price of $27.5 per unit.

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