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# 7. Short-run supply and long-run equilibrium Consider the competitive market for titanium. Assume that,

Question: 7. Short-run supply and long-run equilibrium Consider the competitive market for titanium. 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 0 64 56 48 40 COSTS (Dollars
Show transcribed image textTranscribed image text: 7. Short-run supply and long-run equilibrium Consider the competitive market for titanium. 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 0 64 56 48 40 COSTS (Dollars per pound) 24 16 8 0 0 4 ATC ☐ ☐ AVC MC 8 12 16 20 24 28 32 QUANTITY (Thousands of pounds) 36 40 Use the orange points (square symbol) to plot the initial short-run industry supply curve when there are 10 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 20 firms. Finally, use the green points (triangle symbol) to plot the short-run industry supply curve when there are 30 firms. ? 80 Supply (10 firms) Demand Supply (20 firms) Supply (30 firms) 240 360 480 600 720 840 960 1080 1200 QUANTITY (Thousands of pounds) PRICE (Dollars per pound) 72 64 56 48 32 24 16 8 0 0 120 If there were 20 firms in this market, the short-run equilibrium price of titanium would be would Therefore, in the long run, firms would per pound. At that price, firms in this industry the titanium market. Because you know that competitive firms earn economic profit in the long run, you know the long-run equilibrium price must be per pound. From the graph, you can see that this means there will be firms operating in the titanium industry in long-run equilibrium. True or False: Assuming implicit costs are positive, each of the firms operating in this industry in the long run earns negative accounting profit. True False error: Content is protected !!