Answer:
a) At a price $55, the firm would produce 3 units of output.
At a price of $120, the firm would produce 6 units of output.
At a price of $200, the firm would produce 7 units of output.
The rule is Price = Marginal Cost for a competitive firm
b) The per-unit economic profit (or loss) is calculated by subtracting ATC at a particular level of output from the product price. This per-unit economic profit is then multiplied by the number of units of output to determine the economic profit for the competitive firm.
i) At the product price of $200, the average total costs are $146 , so per-unit economic profit is $54 . Multiplying this amount by the number of units of output results in an economic profit of $378 .
Explanation:
At P = 200, output produced is 7 units
ATC is $146
Per-unit economic profit = 200 - 146 = $54
Hence, Total economic profit = $54 x 7 = $378
ii) At the product price of $120, the average total costs are $140 , so per-unit economic losses are $ -20. Multiplying this amount by the number of units of output results in an economic loss of $-100.
Explanation: At P = 20, output produced will be 5 units. 6th unit will not be produced as it will result in even greater loss.
Total loss = ($140 - $120) x 5 = $100
