Average revenue is an important concept in microeconomics and business economics. It helps firms understand how much revenue they earn, on average, from selling each unit of a product or service. Businesses use average revenue to analyse pricing decisions, evaluate sales performance, and understand their position in different market structures, such as perfect competition, monopoly, monopolistic competition, and oligopoly.
In economics, average revenue is closely related to total revenue and the quantity of output sold. It provides useful information about the income generated per unit and helps economists understand the relationship between price and revenue. For students studying microeconomics, average revenue is particularly important because it explains how firms earn income from their market activities.
For example, if a company earns ₹50,000 by selling 500 units of a product, its average revenue is ₹100 per unit. This means that the firm earns an average of ₹100 for every unit sold.
Meaning and Definition of Average Revenue
Average revenue refers to the revenue earned per unit of output sold by a firm during a particular period. It is calculated by dividing total revenue by the total quantity sold.
In simple words, average revenue is the average amount of money a business receives from selling each unit of its product.
For example, suppose a clothing manufacturer sells 200 shirts and earns total revenue of ₹60,000. The average revenue per shirt is ₹300.
Average revenue helps businesses understand the income generated from individual units of output. It is also useful for analysing the relationship between product prices, consumer demand, and the revenue earned by a firm.
Formula for Average Revenue
The formula for average revenue in economics is:
Average Revenue (AR) = Total Revenue (TR) ÷ Quantity Sold (Q)
Mathematically:
AR = TR / Q
Where:
AR represents average revenue.
TR represents total revenue.
Q represents the quantity of goods or services sold.
When all units of a product are sold at the same price, average revenue equals the selling price per unit.
For example, if a firm earns total revenue of ₹1,20,000 by selling 400 units, the calculation is:
Average Revenue = ₹1,20,000 ÷ 400
Average Revenue = ₹300 per unit.
Therefore, the firm’s average revenue is ₹300 for each unit sold.
Practical Examples of Average Revenue
Consider a mobile phone retailer that sells 50 smartphones and earns total revenue of ₹5,00,000.
Average Revenue = ₹5,00,000 ÷ 50
Average Revenue = ₹10,000 per smartphone.
This calculation shows that the retailer earns an average revenue of ₹10,000 per smartphone sold.
Similarly, suppose a bakery sells 100 cakes and receives total revenue of ₹40,000. Its average revenue is ₹400 per cake.
These examples demonstrate that average revenue can be calculated for almost any business activity involving the sale of goods or services. It is useful for retailers, manufacturers, restaurants, service providers, and other commercial organisations.
Relationship Between Average Revenue and Price
One of the most important principles in economics is that average revenue equals price when the firm receives the same price for every unit sold.
The relationship can be explained as follows:
Total Revenue = Price × Quantity Sold
Average Revenue = Total Revenue ÷ Quantity Sold
Therefore:
Average Revenue = (Price × Quantity Sold) ÷ Quantity Sold
Average Revenue = Price
For example, if a firm sells 100 units at ₹200 per unit, total revenue is ₹20,000. Dividing total revenue by the quantity sold gives average revenue of ₹200.
However, when a business sells different units at different prices, average revenue represents the average revenue per unit across all units sold. In that situation, it may differ from the price charged for a particular unit.
Average Revenue Under Perfect Competition
Perfect competition is a market structure characterised by many buyers and sellers, homogeneous products, and firms that have little or no individual influence over the market price.
Under perfect competition, an individual firm is a price taker. It accepts the prevailing market price and can sell additional units at that price under the standard textbook model.
As a result, average revenue remains constant when the market price is unchanged.
For example, if the market price of a product is ₹100, a perfectly competitive firm receives average revenue of ₹100 per unit, whether it sells 100 units or 500 units.
Under perfect competition:
Price = Average Revenue = Marginal Revenue
This relationship is fundamental to the study of perfect competition. It also helps explain how firms determine their profit-maximising output levels.
Average Revenue Under Monopoly
A monopoly is a market structure in which a single firm supplies a product or service without close substitutes and entry barriers restrict potential competitors.
Unlike a perfectly competitive firm, a monopolist faces the market demand curve and can influence the price through its output decisions. To sell additional units, a monopolist generally needs to reduce the price.
Under the usual single-price monopoly model, average revenue equals the price received per unit. As the monopolist lowers its price to sell more output, average revenue generally decreases.
For example, suppose a monopolist sells 100 units at ₹500 each. Its total revenue is ₹50,000, and average revenue is ₹500. If it must reduce the price to ₹450 to sell more units, its average revenue at the new price becomes ₹450.
This relationship illustrates why average revenue generally slopes downward under monopoly when the firm faces a downward-sloping demand curve.
Relationship Between Average Revenue and Marginal Revenue
Average revenue and marginal revenue are closely related concepts, but they measure different aspects of a firm’s income.
Average revenue measures revenue per unit sold, whereas marginal revenue measures the additional revenue generated by selling an additional unit.
The formula for marginal revenue is:
Marginal Revenue (MR) = Change in Total Revenue ÷ Change in Quantity Sold
For example, suppose a firm’s total revenue increases from ₹10,000 to ₹10,800 when sales increase from 100 units to 110 units.
Marginal Revenue = ₹800 ÷ 10
Marginal Revenue = ₹80 per additional unit.
If the firm receives a constant price for every unit, average revenue and marginal revenue are equal. However, when a firm must lower its price to sell more units, marginal revenue is generally below average revenue under the standard downward-sloping demand model.
This distinction is important for understanding revenue analysis and profit maximisation in microeconomics.
Importance of Average Revenue in Economics
Average revenue has several important applications in economic analysis and business management.
First, it helps businesses evaluate their sales income per unit. By calculating average revenue, firms can compare the revenue generated by different products, services, or sales periods.
Second, average revenue supports pricing decisions. Businesses can study the relationship between price and average revenue to understand how their pricing strategies affect sales income.
Third, it helps economists analyse market structures. The behaviour of average revenue differs between perfectly competitive markets and markets in which individual firms face downward-sloping demand curves.
Fourth, average revenue contributes to profit analysis. Although average revenue does not measure profit directly, comparing revenue per unit with relevant costs per unit can provide useful information about profitability.
Finally, average revenue is important in managerial economics because it helps firms understand consumer demand, product performance, and the financial implications of changes in price and output.
Difference Between Average Revenue and Total Revenue
Total revenue and average revenue are related but different economic concepts.
Total revenue refers to the complete income a firm receives from sales, while average revenue measures the income earned per unit sold.
For example, if a firm sells 100 units at ₹500 each, its total revenue is ₹50,000, while its average revenue is ₹500 per unit.
If the firm sells 200 units at the same price, total revenue rises to ₹1,00,000, but average revenue remains ₹500 per unit.
This example demonstrates that total revenue can increase as sales rise while average revenue remains constant, provided the price per unit does not change.
Conclusion
Average revenue in economics refers to the revenue earned per unit of output sold. It is calculated by dividing total revenue by the quantity sold. Under a single-price selling arrangement, average revenue equals the price received per unit.
The concept is essential for understanding pricing strategies, revenue analysis, and firm behaviour under different market structures. Under perfect competition, average revenue generally remains equal to the market price, while under monopoly, average revenue usually declines as the firm lowers its price to increase sales.
In conclusion, average revenue is a fundamental concept in microeconomics that helps students, economists, and business managers understand the relationship between price, sales quantity, and revenue per unit. When studied alongside total revenue, marginal revenue, and production costs, it provides a stronger foundation for ana
