S. Short-run supply and long-run equilibrlum Consider the perfectly competitive market for steel. Assume that, regardiess of how many firms are in the industry, every firm in the industry ie identical and faces the marginal cost (MC), average total cost (ATC), and average variatle cost (AVC) curves shown on the fotowing graph. 15, 40 16 AVC .HN UH M OUANTITY hoaands ofonsl t d gl susoo

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S. Short-run supply and long-run equilibrium
Consider the perfectly competitive market for steel. Assume that, regardiess of how many firms are in the industry, every firm in the industry is
Study Tools
identical and faces the marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves shown on the following graph.
AZ
ons
cess Tips
Cess Tips
YOU
Tools
ATC.
15, 40
Principles of
34
ack
AVC
MO
16
27
QUANTITY (Thusands of tona
uad alsis00
Transcribed Image Text:S. Short-run supply and long-run equilibrium Consider the perfectly competitive market for steel. Assume that, regardiess of how many firms are in the industry, every firm in the industry is Study Tools identical and faces the marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves shown on the following graph. AZ ons cess Tips Cess Tips YOU Tools ATC. 15, 40 Principles of 34 ack AVC MO 16 27 QUANTITY (Thusands of tona uad alsis00
TOOwing magram shows the market demand for steel.
udy Tools
A-2
Uhe the orange points (square symbo) to plot ehe initial short-run industry supply curve when there are 20 firms in the market. (Mint You can
disregard the portion of the supply curve that corresponds to prices where there is no output, since this the industry supply curve.) Next, use the
purple points (diamond symbol) to plet the short-run industry supply curve when there are 40 fems. Finally, use the green points (triangle symbo) te
plot the short-run industry supply cunve when there are d0 firms.
Tips
ou
pols
Supply 20m)
ciples of
Demand
Bupply (40 fm
Supply (0 ema)
24
1 r e 00
QUANTITY (Thands of )
45
Supply (40 firma)
40
32
Supply (80 fima)
24
16
120 240 360 40 00 720 840 900 1000 1200
QUANTITY (Thousands of tons)
If there were 60 firms in this market, the short-run equilibrium price of steel would be
Therefore, in the long run, firms would
per ton, At that price, firms in this industry
would
the steel market.
Because you know that perfectly competitive firms earn
economic profit in the long run, you know the long-run equilibrium price must
be s
per ton. From the graph, you can see that this means there will be
firms operating in the steel industry in long-run equilibrium.
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Save & Continue
Continue without saving
PRICE (Dolars per to
PRICE Doas per ton)
2RES TIR
Transcribed Image Text:TOOwing magram shows the market demand for steel. udy Tools A-2 Uhe the orange points (square symbo) to plot ehe initial short-run industry supply curve when there are 20 firms in the market. (Mint You can disregard the portion of the supply curve that corresponds to prices where there is no output, since this the industry supply curve.) Next, use the purple points (diamond symbol) to plet the short-run industry supply curve when there are 40 fems. Finally, use the green points (triangle symbo) te plot the short-run industry supply cunve when there are d0 firms. Tips ou pols Supply 20m) ciples of Demand Bupply (40 fm Supply (0 ema) 24 1 r e 00 QUANTITY (Thands of ) 45 Supply (40 firma) 40 32 Supply (80 fima) 24 16 120 240 360 40 00 720 840 900 1000 1200 QUANTITY (Thousands of tons) If there were 60 firms in this market, the short-run equilibrium price of steel would be Therefore, in the long run, firms would per ton, At that price, firms in this industry would the steel market. Because you know that perfectly competitive firms earn economic profit in the long run, you know the long-run equilibrium price must be s per ton. From the graph, you can see that this means there will be firms operating in the steel industry in long-run equilibrium. Grade It Now Save & Continue Continue without saving PRICE (Dolars per to PRICE Doas per ton) 2RES TIR
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