Question

How does a producer attain equilibrium (can maximise profits) under perfect competition through MR and MC approach?

Answer 1

Under perfect competition, a producer is a price-taker; it cannot influence the market price. Therefore, Marginal Revenue (MR) remains constant and equal to price (MR = AR = Price). The producer uses the Marginal Revenue and Marginal Cost (MR-MC) approach to decide how much to produce in order to maximise profit.

• The firm should produce up to the level where the revenue from the last unit (MR) equals the cost of producing it (MC).
• If MR > MC, the firm should increase output to earn more profit.
• If MR < MC, the firm should decrease output to avoid losses.
• The MC curve must cut the MR curve from below.
• This ensures that the point is not a minimum but a maximum profit point.

• In perfect competition, Price = MR, so the MR curve is horizontal.
• The firm will produce where this MR line intersects the MC curve from below.
• This is the point of maximum profit, where the firm has no incentive to increase or decrease output.