Examlex
A tractor built in 2001 and still in operation today is:
Prices
The amount of money expected, required, or given in exchange for goods or services.
Marginal Rate
The rate of change in cost or benefit resulting from a particular increase in volume or activity.
Consumption
The use of goods and services by households, which is a primary component in calculating a country's gross domestic product (GDP).
Marginal Utilities
The additional satisfaction or utility gained from consuming one more unit of a good or service.
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