per pound. From the graph, you can see that this means there will be firms operating in the ruthenium 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. O True O False

ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
Author:NEWNAN
Publisher:NEWNAN
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Question
The following graph plots the market demand curve for ruthenium.
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.
PRICE (Dollars per pound)
80
72
64
03
58
Supply (10 firms)
48
Demand
Supply (20 firms)
40
32
24
16
8
0
0
120
240
350 480 600 720 840 960 1080 1200
QUANTITY (Thousands of pounds)
Supply (30 firms)
?
If there were 20 firms in this market, the short-run equilibrium price of ruthenium would be $
would
Therefore, in the long run, firms would
per pound. At that price, firms in this industry
the ruthenium 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 ruthenium 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 eams negative accounting profit.
O True
O False
Transcribed Image Text:The following graph plots the market demand curve for ruthenium. 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. PRICE (Dollars per pound) 80 72 64 03 58 Supply (10 firms) 48 Demand Supply (20 firms) 40 32 24 16 8 0 0 120 240 350 480 600 720 840 960 1080 1200 QUANTITY (Thousands of pounds) Supply (30 firms) ? If there were 20 firms in this market, the short-run equilibrium price of ruthenium would be $ would Therefore, in the long run, firms would per pound. At that price, firms in this industry the ruthenium 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 ruthenium 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 eams negative accounting profit. O True O False
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