Consider the competitive market for copper. Assume that, regardless of how many firms are in the industry, every firm in the industry is identical and faces the marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves shown on the following graph. ? 80 72 84 COSTS (Dollars per pound) PRICE (Dolars per pound) 40 22 8 2 32 16 AVC MCD 0 6 012 15 18 21 QUANTITY (Thousands of pounds) The following diagram shows the market demand for copper. Use the orange points (square symbol) to plot the initial short-run industry supply curve when there are 20 firms in the market. (Hint: You can disregard the portion of the supply curve that corresponds to prices where there is no output since this is the industry supply curve.) Next, use the purple points (diamond symbol) to plot the short-run industry supply curve when there are 40 firms. Finally, use the green points (triangle symbol) to plot the short-run industry supply curve when there are 60 firms. 80 72 64 58 Demand 60 0 ATC 2 D 0 27 30 0 Supply (20 firms) Supply (40 firms) Supply (60 firms) 94

Consider the competitive market for copper. Assume that, regardless of how many firms are in the industry, every firm in the industry is identical and faces the marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves shown on the following graph. ? 80 72 84 COSTS (Dollars per pound) PRICE (Dolars per pound) 40 22 8 2 32 16 AVC MCD 0 6 012 15 18 21 QUANTITY (Thousands of pounds) The following diagram shows the market demand for copper. Use the orange points (square symbol) to plot the initial short-run industry supply curve when there are 20 firms in the market. (Hint: You can disregard the portion of the supply curve that corresponds to prices where there is no output since this is the industry supply curve.) Next, use the purple points (diamond symbol) to plot the short-run industry supply curve when there are 40 firms. Finally, use the green points (triangle symbol) to plot the short-run industry supply curve when there are 60 firms. 80 72 64 58 Demand 60 0 ATC 2 D 0 27 30 0 Supply (20 firms) Supply (40 firms) Supply (60 firms) 94

Exploring Economics

8th Edition

ISBN:9781544336329

Author:Robert L. Sexton

Publisher:Robert L. Sexton

Chapter11: The Firm: Production And Costs

Section: Chapter Questions

Problem 15P

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