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Competitive market characteristics
Easy entry for firms, large numbers of buyers and sellers, firms are price takers, homogenous product
Total revenue
#of goods sold x price sold at
Average revenue
Total revenue / quantity sold
Marginal revenue
Change in total revenue resulting from the sale of one or more unit
TR/Q
Characteristics in the long run for firms
no fixed costs
all costs are variable
firms can leave/ enter
How to maximize profit
MR=MC
When a firm should shut down
price < AVC
When a firm should keep producing
Price > AVC
MR>MC
Firm can still increase profits by producing more
MR<MC
Selling more only increases costs. Shutdown point