MICROECONOMICS+CONNECT RMU EDITION
21st Edition
ISBN: 9781264088874
Author: McConnell
Publisher: MCG
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Chapter 10, Problem 6DQ
To determine
Marginal cost curve and variable cost curve in the pure competition.
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Suppose that the paper clip industry is perfectly competitive. Also assume that the market price for paper clips is 2 cents per paper clip. The demand curve faced by each firm in the industry is: LO10.3 a. A horizontal line at 2 cents per paper clip. b. A vertical line at 2 cents per paper clip. c. The same as the market demand curve for paper clips. d. Always higher than the firm’s MC curve.
Suppose that the pen-making industry is perfectly competitive. Also suppose that each current firm and any potential firms that might enter the industry all have identical cost curves, with minimum ATC = $1.25 per pen. If the market equilibrium price of pens is currently $1.50, what would you expect it to be in the long run? LO11.2 a. $0.25. b. $1.00. c. $1.25. d. $1.50.
A firm in a purely competitive industry is currently producing 1,000 units per day at a total cost of $450. If the firm produced 800 units per day, its total cost would be $300, and if it produced 500 units per day, its total cost would be $275. What are the firm’s ATC per unit at these three levels of production? If every firm in this industry has the same cost structure, is the industry in long-run competitive equilibrium? From what you know about these firms’ cost structures, what is the highest possible price per unit that could exist as the market price in long-run equilibrium? If that price ends up being the market price and if the normal rate of profit is 10 percent, then how big will each firm’s accounting profit per unit be?
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- Consider a set of 1000 companies operating in a competitive market. The supply curve for this market is given by O = 20+2P and the demand curve is given by D = 280-4P, where quantity Q is measured in millions of tons and Price P is measured in monetary units. Considering that the marginal cost of the individual firm is given by 2Q, the quantity Q being measured in thousands of tons, we ask: a) Sketch the market equilibrium and the equilibrium of an individual firm. b) What is the situation of this market at that particular moment. c) Make considerations about the long-run equilibrium trend of this market.arrow_forwardWhich of statement is true about economic profit in the long run.(LO2,3). a) both the monopolistic and perfect competitor make one. b) neither the monopolistic nor the perfect competitor makes one. c) only the perfect competitor makes one. d) only the monopolistic makes one.arrow_forwardSuppose that each firm in a competitive industry has the following costs: Total cost: TC = 50 + q2 Marginal cost: MC = q where q is an individual firms 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 firms fixed cost? What is its variable cost? Give the equation for average total cost. b. Graph average-total-cost curve and the marginal-cost curve for q from 5 to 15. At what quantity is average-total-cost curve at its minimum? What is marginal cost and average total cost at that quantity? c Give the equation for each firms supply curve. d. Give the equation for the market supply curve for the short run in which the number of firms is fixed. e. What is the equilibrium price and quantity for this market in the short run? f. In this equilibrium, how much does each firm produce? Calculate each firms profit or loss. Is there incentive for firms to enter or exit? g. In the long run with free entry and exit, what is the equilibrium price and quantity in this market? h. In this long-run equilibrium, how much does each firm produce? How many firms are in the market?arrow_forward
- 2. Consider a firm that has no fixed costs and that is currently losing money. Are there any situations in which it would want to stay open for business in the short run? 3. Why is the equality of marginal revenue and marginal cost essential for profit maximization in all market structures? Explain why price can be substituted for marginal revenue in the MR = MC rule when an industry is purely competitive.arrow_forwardtotal cost function for this market is TC = 500 + 10Q2 1. What are the profit-maximizing quantity, price, and profit for this market? 2. If there are two firms Atlas and Bowden in this market with the same earlier total cost function and they engage in Cournot competition, what is each firm's equilibrium quantity, price, and profit? [NB: round quantities to nearest integer to find equilibrium quantity, price, and profit] Is this a long run equilibrium? Why or why not?arrow_forward1.Briefly state the basic characteristics of pure competition, pure monopoly, monopolistic competition, and oligopoly. Under which of these market classifications does each of the following most accurately fit? (a) a supermarket in your hometown; (b) the steel industry; (c) a Kansas wheat farm; (d) the commercial bank in which you or your family has an account; (e) the automobile industry. In each case, justify your classification. LO1arrow_forward
- An economist estimated that the cost function of a single-product firm isC(Q) = 100 + 20Q + 15 Q^2+ 10 Q^3Based on this information, determine: (LO4, LO5)a. The fixed cost of producing 10 units of output.arrow_forward4. You are the manager of a monopoly, and your demand and cost functions are given by P = 300 − 3Q and C(Q) = 1,500 + 2Q2, respectively. (LO3, LO4) a. What price–quantity combination maximizes your firm’s profits? b. Calculate the maximum profits. c. Is demand elastic, inelastic, or unit elastic at the profit-maximizing price–quantity combination? d. What price–quantity combination maximizes revenue? e. Calculate the maximum revenues. f. Is demand elastic, inelastic, or unit elastic at the revenue-maximizing price–quantity combination? 6. The accompanying diagram shows the demand, marginal revenue, and marginal cost of a monopolist. (LO1, LO3, LO5) a. Determine the profit-maximizing output and price. b. What price and output would prevail if this firm’s product were sold by price-taking firms in a perfectly competitive market? c. Calculate the deadweight loss of this monopoly. 8. The elasticity of demand for a firm’s product is –2.5 and its advertising elasticity of demand is 0.2.…arrow_forwardUse the accompanying graph to answer the questions that follow. (LO1, LO2) a. Suppose this monopolist is unregulated. (1) What price will the firm charge to maximize its profits? (2) What is the level of consumer surplus at this price? b. Suppose the firm’s price is regulated at $80. (1) What is the firm’s marginal revenue if it produces 7 units? (2) If the firm is able to cover its variable costs at the regulated price, how much output will the firm produce in the short run to maximize its profits? (3) In the long run, how much output will this firm produce if the price remains regulated at $80?arrow_forward
- 1. Why can't a perfectly competitive firm charge a price premium (sell at a higher price) for its product relative to other firms in the industry? What is the term given to perfectly competitive firms since they must sell at the market equilibrium price? 2. For a perfectly competitive firm, what is the relationship between Price and Marginal Revenue?arrow_forwardTwo firms with the same (constant) marginal costs are engaging in Bertrand competition. One of the companies exits the industry. As a aconsequence, the price for the other firm increases by 50%. What is the elasticity of demand in this market?O. 3O. 2O. 2.5O. 4arrow_forward21. A long-run equilibrium in an industry exists when cost per unit is at its lowest possible level. O. there is only one firm in the industry. O. the size of the market remains constant. O. price equals cost per unit. O. price equals marginal cost. 22. A tariff imposed on a country as a penalty for dumping goods is called a(n) O. antidumping duty. O. quota tariff. O. ad valorem tariff. O. revenue tariff. O. dumping duty.arrow_forward
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