It is a true statement that firms calculate their marginal cost and marginal revenue to find the profit-maximizing output.
A Marginal cost refers to the change in total cost when output is increased by one unit.
A Marginal revenue refers to the change in total revenue when output is increased by one unit.
In conclusion, generally, a total profit is maximized where marginal revenue equals marginal cost, thus, they need to be calculated to realize that.
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