| http://www.w3.org/ns/prov#value | - Marginal costs, i.e. the costs of producing an additional unit of output, are therefore constant, but when the overall level of output rises, the fixed costs are distributed over a greater number of units, and the firm???s average costs of production therefore decline.7 Using the simple hamburger as an example, consumers prefer to choose from a selection of hamburgers across several restaurants to
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