Answer :
When the output level is 40 the profit is highest in the short run.
Given,
The price of a product sold by a perfectly competitive firm is $5
To know at which output level is total profit highest in the short run,
From below table,
Output Total Revenue Total Cost Profit
20 100 70 30
25 125 75 50
30 150 85 65
35 175 100 75
40 200 125 75
45 225 155 70
50 250 190 60
Hence, from the table when the output level is 40 the profit is highest in the short run.
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