Question

Explain how a producer attains equilibrium using the TR and TC approach.

Answer 1

A producer is in equilibrium when it earns maximum profit. Under the TR-TC approach, profit is calculated as:

Profit = Total Revenue (TR) − Total Cost (TC)

The firm is in equilibrium where this profit is the highest.

Equilibrium:

• At low output levels (Before OL): TC > TR, so the firm incurs losses.
• At point OL (Break-even point): TR = TC, so the firm makes zero profit. This value is the break-even point.
• Between OL and ON: TR > TC, so the firm earns profits. As output increases, profit increases.
• At point OM: The vertical distance between TR and TC is maximum. This is where the firm earns maximum profit - producer’s equilibrium.
• Beyond ON: TC > TR again → Profit becomes negative (losses return).

TR - TC Approach:

• OL: Break-even point (TR = TC)
• OM: Equilibrium point (maximum profit)
• ON: End of profit zone

The difference between total revenue and total cost is at its maximum, and producing either more or less than this optimal level would decrease profit.