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sarahjia · 2020年06月03日

问一道题：NO.PZ2018062003000066

  1. CFA I
  2. Economics Analysis

问题如下：

Being a monopoly in the market, Googge,Inc. recently carrys out its market study and finds that the price elasticity of demand is 1.8. If the marginal cost is $30 and the average cost is $50, its price is most likely to be:

选项：

A.

$30.

B.

$50.

C.

$68.

解释：

C is correct

When MR = MC, the firm can achieve maximized profits. Because MR =P(1-1/|E|) we can draw the equation:

$30 = P[1 – (1/1.8)] = P × 0.444

P = $68

考题：利润最大化

解析：本题直接考察利润最大化，

直接套用公式，MR =P(1-1/|E|)，代入数据得：

$30 = P[1 – (1/1.8)] = P × 0.444，反解得到P

P = $68

请问老师题目给出的ac是无用条件对吗，谢谢

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1 个答案

源_品职助教 · 2020年06月03日

嗨，努力学习的PZer你好：


是的，这里的AC是一个干扰条件，解题用不到的。

不客气


-------------------------------
虽然现在很辛苦，但努力过的感觉真的很好，加油！


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NO.PZ2018062003000066 问题如下 Being a monopoly in the market, Googge,Inrecently carrys out its market stu anfin ththe prielasticity of manis 1.8. If the margincost is $30 anthe average cost is $50, its priis most likely to be: A.$30. B.$50. C.$68. C is correctWhen MR = Mthe firm cachieve maximizeprofits. Because MR =P(1-1/|E|) we cthe equation:$30 = P[1 – (1/1.8)] = P × 0.444 P = $68考题利润最大化解析本题直接考察利润最大化，直接套用公式，MR =P(1-1/|E|)，代入数据得$30 = P[1 – (1/1.8)] = P × 0.444，反解得到PP = $68 不是说P=ATC吗，为啥不是50

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