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Defining Costs This page defines profit, revenue, and cost, including total cost, average cost and marginal cost. Profit The discussion of production theory is based on the premise that the business manager will decide to pursue strategies and practices that maximize profit. However, the discussion of MVP and MIC on a previous page does not provide enough information to determine profitability. Accordingly, this page describes an analysis whereby profit can be calculated. Although the definition is obvious, it is helpful to restate that profit is the difference between total revenue (TR) and total cost (TC). Total Revenue (TR): same as VTP; they are the same -- but when illustrated, revenue is measured in term of the units of output, rather than units of input. Now, the axes of the graphs are dollars and quantity of output. TR is illustrated as a straight line if perfect competition is assumed
Total Cost is a combination of cost of fixed inputs and the cost of variable inputs.
Profit is maximized at the level of output on the graph where the vertical distance between TR and TC is the greatest.
More Thoughts about Profit We also can consider the profit-maximizing question on a per unit basis; that is, revenue per unit and cost per unit.
This information still does not reveal at what level of output the firm will maximize profit A firm will continue to increase the level of output as long as the revenue from the additional output (marginal revenue, MR) is greater than the cost of producing that additional output (marginal cost, MC) Marginal revenue -- additional revenue due to producing and selling one more unit of output
Marginal cost -- additional cost due to producing one more unit of output
When graphing the MC, it will equal AVC at its minimum, ATC at its minimum, and then goes to infinity at the level of output where TPP is maximized. The level of output where MC is minimum is the level of output where MPP is at its maximum (inflection point); this is in Stage I, however.
In summary
The next section addresses profit maximizing level of output. Last Updated October 22, 2009 |
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Email: David.Saxowsky@ndsu.edu This material is intended for educational purposes only. It is not a substitute for competent professional advice. Seek appropriate advice for answers to your specific questions. |
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