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A monopolistic seller sells the same good in 2 markets. The demands in the two m

ID: 1201999 • Letter: A

Question

A monopolistic seller sells the same good in 2 markets. The demands in the two markets are
Q1= 100-p1. Q2=60-(1/2)p2 Assume marginal cost is 10
A) find the profit maximizing price and output in the two markets. What is total profit? A monopolistic seller sells the same good in 2 markets. The demands in the two markets are
Q1= 100-p1. Q2=60-(1/2)p2 Assume marginal cost is 10
A) find the profit maximizing price and output in the two markets. What is total profit?
Q1= 100-p1. Q2=60-(1/2)p2 Assume marginal cost is 10
A) find the profit maximizing price and output in the two markets. What is total profit?

Explanation / Answer

1st market:

Q1 = 100 – P1

P1 = 100 – Q1

TR = P1Q1 = 100Q1 – (Q1)^2

MR = Derivative of TR with respect to Q1

       = 100 – 2Q1

The equilibrium condition is MR = MC

100 – 2Q1 = 10

2Q1 = 90

Q1 = 45

Putting Q1 = 45 in P1 = 100 – Q1 = 100 – 45 = 55

Answer: Profit maximizing price is $55 and quantity is 45 units.

2nd market:

Q2 = 60 – 0.5P2

0.5P2 = 60 – Q2

P2 = 120 – 2Q2

TR = P2Q2 = 120Q2 – 2(Q2)^2

MR = Derivative of TR with respect to Q2

       = 120 – 4Q2

The equilibrium condition is MR = MC

120 – 4Q2 = 10

4Q2 = 110

Q2 = 27.5

Putting Q2 = 27.5 in P2 = 120 – 2Q2 = 120 – 55 = 65

Answer: Profit maximizing price is $65 and quantity is 27.5 units.

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