Microeconomics (9th Edition) (Pearson Series in Economics)
9th Edition
ISBN: 9780134184241
Author: Robert Pindyck, Daniel Rubinfeld
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 8, Problem 10E
(a)
To determine
The
(b)
To determine
Identify the effect of entry and exit of the firms in the long run on the
(c)
To determine
Level of output that sells at the lowest price level.
(d)
To determine
Identify the lowest price level in the short run.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A perfectly competitive industry is in long-run equilibrium. Each of the identical firms has a long- run
cost function C = 100 + q². As a result, a firm's marginal cost function is MC = 2q. In the long-run
competitive equilibrium,
(a) How much does the firm produce?
(b) What is the equilibrium price?
(c) If the market quantity demanded at the equilibrium price is Q = 2500, how many firms are in the
market?
Consider a competitive industry with a large number of firms, all of which have identical cost functions c(y) = y2 + 1 if y > 0 and c(y) = 0 if y = 0. The demand curve for this industry is D(p)= 52-p.
1. Find marginal cost and average cost functions.2. What is the competitive price in this market?3. What will be the number of firms in the industry?
Suppose you are given the following information about a particular industry:
QD = 6500 – 100P Market Demand
QS = 1200P Market Supply
TC(q) = 722 + q2/200 Individual firm’s total cost function
MC(q) = q/100 Individual firm’s marginal cost function
Assume that all firms are identical and that the market is characterized by perfect competition.
Find an individual firm’s supply curve.
How many firms are there currently in the market?
Find the equilibrium price and equilibrium market quantity.
How much is output supplied by each firm, and how much profit does each firm make in the short run?
Would you expect to see entry into or exit from the industry in the long run? Explain.
What effect will entry or exit have on the market equilibrium? Find the long-run equilibrium price, the number of firms, and the amount of output each firm produces in the long run.
Chapter 8 Solutions
Microeconomics (9th Edition) (Pearson Series in Economics)
Ch. 8 - Prob. 1RQCh. 8 - Prob. 2RQCh. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Prob. 13RQCh. 8 - Prob. 14RQCh. 8 - Prob. 1ECh. 8 - Prob. 2ECh. 8 - Prob. 3ECh. 8 - Suppose you are the manager of a watchmaking firm...Ch. 8 - Prob. 5ECh. 8 - Prob. 6ECh. 8 - Prob. 7ECh. 8 - Prob. 8ECh. 8 - Prob. 9ECh. 8 - Prob. 10ECh. 8 - Prob. 11ECh. 8 - Prob. 12ECh. 8 - Prob. 13ECh. 8 - A sales tax of 1 per unit of output is placed on a...Ch. 8 - Prob. 15E
Knowledge Booster
Similar questions
- Consider a market with demand given by Q=100-P. The market is perfectly competitive with 60 firms and all have same cost structure. They all have no fixed costs and a constant variable cost of USD 40. How do we get the market supply curve for this situation.arrow_forwardSuppose that each firm in a competitive industry has the following costs: Total cost: TC=50 + 1/2q^2 Marginal cost: MC=q where q is an individual firm's quantity produced. The market demand curve for this product is Demand: QD = 120 - P where P is the price and Q is the total quantity of the good. Currently, there are 9 firms in the market. a. What is each firm's fixed cost? What is its variable cost? Give the equation for average total cost.arrow_forwardSuppose that the market demand for a product is given by ( A > 0 and B > 0). Suppose QABP=-also that in a competitive industry the typical firm’s cost function is given by (k > 2()Cqkaqbq=++0, a > 0 and b > 0).(a) Calculate the long-run equilibrium market price and the output for the typical firm. (b) Calculate the equilibrium number of firms in the market.(c) Describe how changes in the demand parameters A and B affect the equilibrium number of firms in this market. Explain your results intuitively.arrow_forward
- Consider the following graph of the average and marginal cost functions for a firm in a perfectly competitive market. 30 r 25 20 MC 15 10 P 7 5 0 AC 4 0 2 5 8 10 q At a price of P=10: (i) the firm's profit-maximizing quantity is 5 (ii) the average cost of production is (iii) the marginal cost of production is (iv) the firm's total profit is (v) the firm's variable profit is 6arrow_forwardIn a perfectly competitive market demand function of a good is Q" = -30P+ 2250 and supply function is Q° = 20P. Firms that are active in this market have an identical cost function of 0* – 6Q² + 30Q Calculate the short run market price and short run profit of each firms. b. How many firms are active in market in short run? c. What will be the long run price in market? d. How many firms are active in market in long run? a.arrow_forwardSuppose that each firm in a competitive industry has the following costs: Total cost: TC = 50 + 1/2q2 Marginal cost: MC = q Where q is an individual firm’s quantity produced. The market demand curve for the product is: Demand: QD = 120 – P Where P is the price and Q is the total quantity of the good. Currently there are 9 firms in the market. What is each firm’s fixed cost? What is its variable cost? Give the equation for average total cost. Graph the average-total-cost curve and the marginal-cost curve for q from 5 to 15. At what quantity is the average-total-cost curve at its minimum? What is the marginal cost and average total cost at that quantity? Give the equation for each firm’s supply curve. Give the equation for the market supply curve for the short run in which the number of firms is fixed. What is the equilibrium price and quantity for the market in the short run? In this equilibrium, how much does each firm produce? Calculate the firm’s profit and loss. Do firms have…arrow_forward
- Each of the 8 firms in a competitive market has a cost function of C= 5+q?. The market demand function is Q = 120 - p. Determine the equilibrium price, quantity per firm, and market quantity. The equilibrium price is $ (Enter your response as a whole number.) The quantity per firm is q= units. (Enter your response as a whole number.) The market quantity is Q = units. (Enter your response as a whole number.)arrow_forwardPerfectly Competitive market vs duopoly market Suppose the daily demand function of pizza in St Catherines Q^d=2175-5p. For 1 pizza store, the variable cost of making Qpizza per day is C(q)=0.2q^2 – 5q there is a 2000$ fixed cost. There is free entry in the long run a) What is the long run market equilibrium price and quantity in this market? How many firms in the market b) If the marginal cost decreased by 2$ per pizza what is the new short run market equilibrium price and quantity.c) Draw graphs to show the short run and the long run responses of both an individual firm and the market in part b. Now assume the market demand function does not change, consider duopoly market in which the marginal cost of each firm is 35. d) What is the nash equilibrium price and quantity in this Stackelberg model.arrow_forwardA firm operates in a perfectly competitive market. Its marginal cost = to its marginal revenue. It is incurring economic losses . Based on this information, which of the following is true? a) An increase in output will decrease the forms economic losses. b) a decrease in output will decrease the firms economic losses. c) Any change in output will fail to result in positive economic profits. d) An increase in price will decrease the firms economic losses. e) the forms marginal revenue exceeds its outputs average total costarrow_forward
- You are given the following information for a producer of organic grommets in a perfectly competitive market. TFC = $8 Market price = $13 Quantity MC ($) 1 10 2 8 3 9 4 11 5 14 6 18 The marginal cost of production appears in the table above. What is the profit-maximizing output? Is the firm making a profit or loss? How much?arrow_forwardSuppose you are given the following information about a particular industry: QD = 3600 - 200P Market demand QS = 1000P Market supply q? Firm total cost function C(q) = 595 + 200 29 MC(q) = 200 Firm marginal cost function. Assume that all firms are identical and that the market is characterized by perfect competition. Find the equilibrium price, the equilibrium quantity, the output supplied by the firm, and the profit of each firm. The equilibrium price is $ (Enter your response rounded to two decimal places.)arrow_forwardThe information below applies to a competitive firm that sells its output for $45 per unit. When the firm produces and sells 100 units of output, its average total cost is $24.5.When the firm produces and sells 101 units of output, its average total cost is $24.65. Suppose the firm is currently producing and selling 100 units of output. Should the firm increase its output to 101 units? a. Yes, because the marginal revenue exceeds the marginal cost. b. Yes, because the marginal revenue exceeds the average total cost c. No, because the marginal cost exceeds the marginal revenue. d. No, because the average total cost exceeds the marginal revenue.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Economics (12th Edition)EconomicsISBN:9780134078779Author:Karl E. Case, Ray C. Fair, Sharon E. OsterPublisher:PEARSON
Engineering Economy (17th Edition)EconomicsISBN:9780134870069Author:William G. Sullivan, Elin M. Wicks, C. Patrick KoellingPublisher:PEARSON
Principles of Economics (MindTap Course List)EconomicsISBN:9781305585126Author:N. Gregory MankiwPublisher:Cengage Learning
Managerial Economics: A Problem Solving ApproachEconomicsISBN:9781337106665Author:Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike ShorPublisher:Cengage Learning
Managerial Economics & Business Strategy (Mcgraw-...EconomicsISBN:9781259290619Author:Michael Baye, Jeff PrincePublisher:McGraw-Hill Education
Principles of Economics (12th Edition)
Economics
ISBN:9780134078779
Author:Karl E. Case, Ray C. Fair, Sharon E. Oster
Publisher:PEARSON
Engineering Economy (17th Edition)
Economics
ISBN:9780134870069
Author:William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher:PEARSON
Principles of Economics (MindTap Course List)
Economics
ISBN:9781305585126
Author:N. Gregory Mankiw
Publisher:Cengage Learning
Managerial Economics: A Problem Solving Approach
Economics
ISBN:9781337106665
Author:Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike Shor
Publisher:Cengage Learning
Managerial Economics & Business Strategy (Mcgraw-...
Economics
ISBN:9781259290619
Author:Michael Baye, Jeff Prince
Publisher:McGraw-Hill Education