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consider the following technology: C(y) = 4 + 8y + y^2 . all firms have this tec

ID: 2505973 • Letter: C

Question

consider the following technology: C(y) = 4 + 8y + y^2 . all firms have this technology, so there is no room for all to profitably operate in the industry. Market demand for the poduct is P = 135 - (1/2)Y, where Y is market quantity. if these firms are price takers and entry/exit is costless, what is the  long run free entry equilibrium per-firm quantity produced by each firm in the industry? Do you have enough information to determine the number of firms who operate in such a long run free entry equilibrium? If yes, what is the number, if no, explain what else is needed?

Explanation / Answer

MC = d(C(y)/dy = 8+2y


Long run equilibrium

MC=MR=P

8+2y=135-0,5y

2.5y=127

y=50.8

price = 135-0.5*y = 135-0.5*50.8 = 109.6

but quntity cant be in integers so y= 51

p = 109.5

theres no information of the number of firms as when u plot price vs quantity curve u will understand it but u cant say how many firms present