If a firm is producing at the profit maximizing level of output, it must be making a profit.
False. It is not necessary that a firm producing at profit maximizing output is making a profit.
A firm’s profit maximizing output is the output where Marginal Revenue=Marginal Cost
Quantity
Price
TR
MR
TC
MC
Profit
0
100
-
-
500
-
-500
1
100
100
100
600
100
-500
2
100
200
100
700
100
-500
3
100
300
100
800
100
-500
4
100
400
100
900
100
-500
5
100
500
100
1000
100
-500
6
100
600
100
1100
100
-500
7
100
700
100
1200
100
-500
In the above example the firm is making a loss at the profit maximizing output (MR=MC) but it is operating as fixed costs are short run costs. There are no fixed costs in the long run, because the long run is a sufficient period of time for all short-run fixed inputs to become variable.
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