Pure monopoly and pure competition are the opposing limiting cases. Monopolistic competition exists between those two.
Monopolistic competition is distinguished by the fact that, despite being closely related to one another, the products of various firms are not all the same but rather differ from one another. As numerous businesses compete to sell their products, there is also a component of competition.
Price=Average Total Cost Total Revenue is equal to total cost so there
is zero economic profit.
Price>ATC It means that firm is earning short run
economic profit.
Price<ATC It means firm is earning Short Run Economic
Loss
Price> Marginal Revenue It means firm has market power
Price>Marginal Cost Mark up
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