The graph below shows the Total Revenue, Total Costs and the units of output produced by Firm A. Use the following graph to answer the questions that follow. First complete the row of MR.Quantity (Units)              0     1       2        3        4        5        6        7         8Total Revenue (TR)        0     90   180    270    360    450    540    630    720Marginal Revenue (MR) 0Total Cost (TC)              50    80   120    170     230    300    380    470    570Marginal Cost (MC)        -      30    40      50       60      70      80      90     100a. What is the Marginal Revenue of the 5th unit of output?b. What is the Fixed Cost of this firm?c. What is the optimal production amount of this firm? (Hint: What is the condition that determinesproduction decisions in a perfectly competitive market?) Show your mathematical work

ECON MICRO
5th Edition
ISBN:9781337000536
Author:William A. McEachern
Publisher:William A. McEachern
Chapter8: Perfect Competition
Section: Chapter Questions
Problem 4.7P
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The graph below shows the Total Revenue, Total Costs and the units of output produced by Firm A. Use the following graph to answer the questions that follow. First complete the row of MR.
Quantity (Units)              0     1       2        3        4        5        6        7         8
Total Revenue (TR)        0     90   180    270    360    450    540    630    720
Marginal Revenue (MR) 0
Total Cost (TC)              50    80   120    170     230    300    380    470    570
Marginal Cost (MC)        -      30    40      50       60      70      80      90     100
a. What is the Marginal Revenue of the 5th unit of output?
b. What is the Fixed Cost of this firm?
c. What is the optimal production amount of this firm? (Hint: What is the condition that determines
production decisions in a perfectly competitive market?) Show your mathematical work

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