Demand and supply are initially at Do and S, in the graph. Demand increases and new firms enter the industry; therefore, in the long run, demand and supply move to D¡ and S1. The long-run industry supply curve is SLR. Price Using the information in the graph, what conclusion can be drawn? Without question, this industry experienced economies of scale as it expanded. So S, S. In the long run, industry costs have remained constant. In the long run, industry costs have increased. In the long run, industry costs have decreased. D, D Output

Demand and supply are initially at Do and S, in the graph. Demand increases and new firms enter the industry; therefore, in the long run, demand and supply move to D¡ and S1. The long-run industry supply curve is SLR. Price Using the information in the graph, what conclusion can be drawn? Without question, this industry experienced economies of scale as it expanded. So S, S. In the long run, industry costs have remained constant. In the long run, industry costs have increased. In the long run, industry costs have decreased. D, D Output

ECON MICRO

5th Edition

ISBN:9781337000536

Author:William A. McEachern

Publisher:William A. McEachern

Chapter8: Perfect Competition

Section: Chapter Questions

Problem 6.12P

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Suppose the short-run demand for a product is give byQD= 200−2P. Supposethe short-run supply curve isQD= 3P−50. (a) What is the market clearing, or competitive equilibrium price and quan-tity. (b) If the existing firms’ average total cost is 40, and the industry is a perfectlycompetitive, constant returns to scale industry, in the long run willpricerise or all? Explain.
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7. Short-run supply and long-run equilibrium Consider the competitive market for ruthenium. Assume that no matter how many firms operate in the industry, every firm is identical and faces the same marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves plotted in the following graph. 8 COSTS (Dollars per pound) 28 2 N 24 16 0 0 MC- ATC AVC 12 16 20 24 QUANTITY (Thousands of pounds) 32 20 The following graph plots the market demand curve for ruthenium.
a. In the long-run in a decreasing-cost competitive industry, HD EDU's long-run supply curve is horizon- tal at the minimum of its ATC; the industry-supply curve is downward sloping. b. In the long-run in a decreasing-cost competitive industry, HD EDU's supply curve is its marginal cost (MC) curve above the minimum of average total cost (ATC); the industry supply curve is the horizon- tal summation of the marginal cost curves of HD EDUs in the industry above the minimum of their respective average total cost curve (ATC). c. In the long-run in a competitive constant-cost industry, HD EDU's supply curve is its MC curve above the minimum of ATC (average total cost); the industry supply curve in this constant-cost industry is perfectly elastic at the minimum of ATC. d. In the long-run in a constant cost industry, the supply curve of a competitive firm is perfectly elastic at the minimum of ATC; the long-run industry supply curve in this constant-cost industry is perfectly elastic at the…
Assume that a firm in a perfectly competitive industry has the following total cost schedule:OUTPUT (UNITS) TOTAL COST ($) 10 110 15 150 20 180 25 225 30 300 35 385 40 480a. Calculate a marginal cost and an average cost schedule for the firm. b. If the prevailing market price is $17 per unit, how many units will be produced and sold? What are profits per unit? What are total profits? c. Is the industry in long-run equilibrium at this price?
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13. Suppose a representative firm in a perfectly competitive industry has the following totalcost of production in the short run: TC=Q^3-40Q^2+600Q.a. What will be the long run equilibrium quantity for the firm? What will be the longrun equilibrium price in this industry?b. Let the industry demand be given by QD=12400-4P. How many firms will be activein the long-run equilibrium?c. Suppose the firm faces a positive demand shock that increases the industry demandto QD=16000-4P. Describe how the industry would respond and calculate thechange in the number of firms.
The industry in the figure below consists of many firms with identical cost structures, and the industry experiences constant scale. Consider a change in demand from D₁ to D2, which increases price from $20 to $30 in the short run. Price $50 $40 $30 $20 $10 0 10 20 Market 30 D₁ 40 Quantity S₁ D₂ 50 60 70 Tools LRS O S₂ Instructions: Enter your answers as a whole number. a. Draw the new short-run market supply curve that will occur in response to the increase in demand and increase in price. Instructions: Use the tool provided 'S2' and be sure your supply curve includes the new equilibrium price and quantity. b. Draw the long-run supply curve. Instructions: Use the tool provided 'LRS' and plot only the endpoints over the entire range of output (0-60). The new equilibrium price is $ 20 and the new equilibrium quantity is 40.
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Q10 I don't know how I got them all wrong