Answer to Question #279627 in Microeconomics for Geoffroy

Question #279627

Firm’s total cost function is given as 4Q3 – 40Q2 + 10Q. This firm operates in a perfectly competitive market. What is its profit maximizing level of output?



1
Expert's answer
2021-12-16T11:49:50-0500

TC=4Q340Q2+10QTC=4Q^3-40Q^2+10Q

MC=12Q280Q+10MC=12Q^2-80Q+10

MR=0MR=0

Profit maximizing level of output is found when:

MC=MRMC= MR

12Q280Q+10=012Q^2-80Q+10=0

Solving the equation above using quadratic formula, we get:

Q=80+640048024=6.54Q=\frac{80+\sqrt {6400-480}}{24}=6.54

Profit maximizing level of output is 6.54.


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