Marginal demand in economics is the change in demand for a product or service in response to a specific change in its price.
[1] Normally, as prices for goods or services rise, demand falls, and conversely, as prices for goods or services fall, demand rises.
A product or service for which price changes cause a relatively big change in demand is said to have elastic demand.
A product or service where price changes cause a relatively small change in demand is said to have inelastic demand.
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