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The long-run supply curve for a product is horizontal with ATC = 200. Market demand is defined as P = 1,000 − 4 Q. The market is competitive and is in long-run equilibrium with 50 firms in the industry. If demand increases to P = 1,240 − 4 Q, how many firms will be in the industry at the new long-run equilibrium?

Respuesta :

Answer:

65 firms will be in the industry at the new long run equilibrium

Explanation:

in the long run the P=ATC

quantity before the change is

200 = 1000-4Q

4Q = 800

Q= 200

each firm output = Q/number of firms = 200 / 50

q = 4

new quantity is

200 = 1240-4Q

4Q = 1040

Q = 260

number of firms=new Q/q

=260/4 = 65

the number of firms is 65 in the long run.

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