Examlex
Ad valorem tariffs on imports are based on a percentage of an import's value,while specific tariffs are based on a lump sum per physical unit imported.
Perfect Substitutes
Goods that can be used in place of each other with no loss of utility or preference by consumers.
Coke and Pepsi
Refers to a classic example of duopoly in economics, representing competition between two dominant firms in a market.
Perfect Complementarity
Refers to a situation in consumer choice theory where two goods are always consumed together in fixed proportions because one is perfectly complementary to the other.
Engel Curve
A graph showing the relationship between the income of a consumer and the amount of a good that the consumer buys, illustrating how spending on a good varies with income.
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