profit maximising rule
produce where the mr is the mc
–> keep producing until the additional cost of producing a unit is greater than the profit it will bring
also the loss minimising rule
price takers
sellers who have no influence over the prices and have to take whatever is set by the market
shut down rule
Shut down producing when the selling cost is lower than the average variable cost
Perfect competition
many small firms making the same product
Mr. Darp
mr = d = ar = d
in market cost transfering over to the firm graph
Allocative efficiency
P = MC where exactly the amount society desires is produced
Productive efficiency
When goods being produced are P = Minimum ATC