Supply and demand - Wikipedia
https://en.wikipedia.org/wiki/Supply_and_demand
OverviewGraphical representationsMicroeconomicsOther marketsEmpirical estimationMacroeconomic usesHistoryCriticismIn microeconomics, supply and demand is an economic model of price determination in a market. It postulates that, holding all else equal, in a competitive market, the unit price for a particular good or other traded item such as labor or liquid financial assets, will vary until it settles at a point where the quantity demanded will equal the quantity supplied (the market-clearing price)…
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