Principles of Microeconomics
7th Edition
ISBN: 9781305156050
Author: N. Gregory Mankiw
Publisher: Cengage Learning
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Question
Chapter 15, Problem 11PA
Subpart (a):
To determine
The reason for the existence of monopoly in the market.
Subpart (b):
To determine
The reason for the existence of monopoly in the market.
Subpart (c):
To determine
The reason for the existence of monopoly in the market.
Subpart (d):
To determine
The reason for the existence of monopoly in the market.
Subpart (e):
To determine
The reason for the existence of monopoly in the market.
Subpart (f):
To determine
The reason for the existence of monopoly in the market.
Subpart (g):
To determine
The reason for the existence of monopoly in the market.
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Hi! I got stuck with my microeconomics homework. Can you please help? Here's the problem:
A monopolist knows that in order to expand the quantity of output it produces from 8 to 9 units it must lower the price of its output from $2 to $1. Calculate the quantity effect and the price effect. Use these results to calculate the monopolist’s marginal revenue of producing the 9th unit. The marginal cost of producing the 9th unit is positive. Is it a good idea for the monopolist to produce the 9th unit?
It is from Microeconomics: Canadian Edition
by Paul Krugman; Robin Wells; Iris Au; Jack Parkinson
The accompanying graph depicts the marginal revenue (MR),
demand (D), and marginal cost (MC) curves for a monopoly.
a. Place point P₁ at the profit maximizing price and quantity
assuming that the monopolist can only charge a single price.
b. What are the profits of the firm if it charges a single price?
$
Suppose the monopolist able to successfully price
discriminate between two groups by charging one group $60
and charging $35 to the other group.
c. What are the firm's profits if it charges the two prices as
mentioned above?
Price and Costs($)
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MR
P
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MC
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95100
Quantity
Use the following demand schedule for a pure monopolist to calculate total revenue and marginal revenue at each quantity. Plot the monopolist’s demand curve and marginal-revenue curve, and explain the relationships between them. Explain why the marginal revenue of the fourth unit of output is $3.50, even though its price is $5. What generalization can you make as to the relationship between the monopolist’s demand and its marginal revenue? Suppose the marginal cost of successive units of output was zero. What output would the single-price monopolist produce, and what price would it charge?
Chapter 15 Solutions
Principles of Microeconomics
Ch. 15.1 - Prob. 1QQCh. 15.2 - Prob. 2QQCh. 15.3 - Prob. 3QQCh. 15.4 - Prob. 4QQCh. 15.5 - Prob. 5QQCh. 15 - Prob. 1CQQCh. 15 - Prob. 2CQQCh. 15 - Prob. 3CQQCh. 15 - Prob. 4CQQCh. 15 - Prob. 5CQQ
Ch. 15 - Prob. 6CQQCh. 15 - Prob. 1QRCh. 15 - Prob. 2QRCh. 15 - Prob. 3QRCh. 15 - Prob. 4QRCh. 15 - Prob. 5QRCh. 15 - Prob. 6QRCh. 15 - Prob. 7QRCh. 15 - Prob. 8QRCh. 15 - Prob. 1PACh. 15 - Prob. 2PACh. 15 - Prob. 3PACh. 15 - Prob. 4PACh. 15 - Prob. 5PACh. 15 - Prob. 6PACh. 15 - Prob. 7PACh. 15 - Prob. 8PACh. 15 - Prob. 9PACh. 15 - Prob. 10PACh. 15 - Prob. 11PA
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- The accompanying graph depicts the marginal revenue (MR), demand (D), and marginal cost (MC) curves for a monopoly. Suppose the monopolist able to successfully price discriminate between two groups by charging one group $60 and charging $35 to the other group. c. What are the firm's profits if it charges the two prices as mentioned above?arrow_forwardSuppose a profit-maximizing monopolist has total cost and marginal cost as follow TC = 8Q + 10 and MC = 8. It faces the demand curve P = 20-1/5Q. a) What is the equilibrium price and output?b) What is the total profit?c) Calculate the consumer surplus, producer surplus, and deadweight loss if the firm acts as a monopolist. Illustrate your answer with a diagramarrow_forwardThe following graph shows the demand (D) for cable services in the imaginary town of Utilityburg. The graph also shows the marginal revenue (MR) curve, the marginal cost (MC) curve, and the average total cost (ATC) curve for the local cable company, a natural monopolist. On the following graph, use the black point (plus symbol) to indicate the profit-maximizing price and quantity for this natural monopolist. Which of the following statements are true about this natural monopoly? Check all that apply. It is more efficient on the cost side for one producer to exist in this market rather than a large number of producers. The cable company is experiencing economies of scale. The cable company must own a scarce resource. The cable company is experiencing diseconomies of scale. True or False: Without government regulation, natural monopolies never earn zero profit in the long run. True Falsearrow_forward
- • , The following figure shows the demand curve and the marginal revenue (MR) curve of a monopolist supplying petroleum. Price/Cost (S) Demand MR 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Quantity (100 gallons) a) If the monopolist faces a constant marginal cost of $3, what is the optimal output that it should produce? b) If the monopolist faces a constant marginal cost of $3, at what price should it sell the optimal output? c) If the average total cost of the monopolist is $4 per liter when it produces the optimal output, determine his profit or loss.arrow_forwardThe following graph gives the demand (D) curve for satellite TV services in the fictional town of Streamship Springs. The graph also shows the marginal revenue (MR) curve, the marginal cost (MC) curve, and the average total cost (ATC) curve for the local satellite TV company, a natural monopolist. On the following graph, use the black point (plus symbol) to indicate the profit-maximizing price and quantity for this natural monopolist. ? PRICE (Dollars per subscription) 100 90 80 70 20 10 0 + 0 2 MR True 6 8 10 12 14 QUANTITY (Number of subscriptions) 16 O False ATC MC 18 20 D Which of the following statements are true about this natural monopoly? Check all that apply. Monopoly Outcome In order for a monopoly to exist in this case, the government must have intervened and created it. The satellite TV company is experiencing economies of scale. It is more efficient on the cost side for one producer to exist in this market rather than a large number of producers. The satellite TV company…arrow_forwardThe diagram below shows a monopolist's marginal cost schedule and the demand curve. Find and depict the following items within the diagram and briefly explain how you found them: Price Monopoly Price Demand Marginal Revenue Total Surplus Quantity Maximising Quantity b) Draw a possible marginal cost curve for the monopolist into the diagram that is consistent with all the other curves that are already given. c) Based on the marginal cost curve that you constructed in part (b), find and highlight the monopolist's total costs at the monopoly price in the diagram. d) Briefly explain the shape of the marginal revenue curve as compared to the demand curve in the diagram.arrow_forward
- A monopolist has a cost function given by c(y) = y2 and faces a demand curve given by P(y) = 120 − y. a. What is his profit-maximizing level of output? What price will the monopolist charge? b. Suppose you put a lump sum tax of $100 on this monopolist. What would its output be? c. If you wanted to choose a price ceiling for this monopolist so as to maximize consumer plus producer surplus, what price ceiling should you choose? How much output will the monopolist produce at this price ceiling?arrow_forwardThe accompanying graph depicts the marginal revenue (MR), demand (D), and marginal cost (MC) curves for a monopoly. a. Place point P1 at the profit maximizing price and quantity assuming that the monopolist can only charge a single price. b. What are the profits of the firm if it charges a single price? $ 1225 Suppose the monopolist able to successfully price discriminate between two groups by charging one group $75 and charging $35 to the other group. c. What are the firm's profits if it charges the two prices as mentioned above? Price and Costs($) 100 95 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 $ 1625 D MR D MC 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95100 Quantityarrow_forwardThe following graph shows the demand (D) for gas services in the imaginary town of Utilityburg. The graph also shows the marginal revenue (MR) curve, the marginal cost (MC) curve, and the average total cost (ATC) curve for the local gas company, a natural monopolist. On the following graph, use the black point (plus symbol) to indicate the profit-maximizing price and quantity for this natural monopolist.arrow_forward
- Rent seeking The following graph shows the demand, marginal revenue, and marginal cost curves for a single-price monopolist that produces a drug that helps relieve arthritis pain. Place the grey point (star symbol) in the appropriate location on the graph to indicate the monopoly outcome such that the dashed lines reveal the profit-maximizing price and quantity of a single-price monopolist. Then, use the green rectangle (triangle symbols) to show the profits earned by the monopolist. table 1 Suppose that should the patent on this particular drug expire, the market would become perfectly competitive, with new firms immediately entering the market with essentially identical products. Further suppose that in this case the original firm will hire lobbyists and make donations to several key politicians to extend its patent for one more year. The firm is prepared to spend up to $_____ million to extend its patent.arrow_forwardThe diagram above represents a monopolist firm. Answer the following questions: What price will this firm charge and what quantity produced in order to maximize profit? Explain your answer. If this firm becomes regulated and the regulatory agency want to achieve economic efficiency, what will be the price and quantity? Explain your answer. If the monopolist operates at the economic efficiency level, will he be making a profit or loss? Explain. Suppose the regulatory agency wants the monopolist to charge a price that matches what it costs to produce a unit of the good/service. What price will this be and what would be the quantity produced? Explain. At a price ceiling of $41 what would be the profit/loss of the monopolist?arrow_forwardIn the next two problems, (1) and (2), consider a monopolist that maximizes profits and charges all consumers the same price. The inverse demand function is P = 20 – 2Q, where P is the price and Q is output. Calculate the deadweight loss to consumers (if any) and to the monopolist (if any). (1) Marginal cost is always zero. (2) Marginal cost is MC = Q. Hint: Graphing the problem may help you visualize it.arrow_forward
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