2.2 The Role of Markets in Allocating Resources

2026 📋 Syllabus Objectives

By the end of these notes, you should be able to:

  • 2.2.1 Explain how a market system works, including the roles of buyers and sellers, how scarce resources are allocated, and what market equilibrium and market disequilibrium mean.
  • 2.2.2 Identify and explain the three key questions that arise from the economic problem — what to produce, how to produce, and for whom to produce.
  • 2.2.3 Explain how the price mechanism provides answers to these three key allocation questions.

📖 2.2.1 — The Market System

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What Is a Market?

A market is any arrangement or process that brings buyers and sellers together so they can exchange goods and services. A market does not have to be a physical place — it can also happen online or over the phone.

Examples of markets:

  • A fruit stall in a town centre (physical market)
  • Shopping on Amazon or an e-commerce app (online market)
  • Buying and selling shares of companies (stock market)
  • Workers looking for jobs and employers looking for staff (labour market)
  • Buying and selling currencies like dollars or euros (foreign exchange market)
  • Trading raw materials like oil, gold, or wheat (commodity market)

💡 Exam tip: In Economics, a "market" is not just a building or a stall. It is any system — physical or virtual — where buyers and sellers can meet and trade.

Buyers and Sellers: Their Roles

Every market has two sides: buyers and sellers. Both play essential roles.

🛒 Buyers (also called consumers or demanders)

  • Buyers are the people or organisations that want to purchase goods and services.
  • Their choices and preferences create demand — that is, how much of a product people want to buy.
  • Buyers signal how much they are willing to pay, which helps set prices in the market.
  • When buyers have many sellers to choose from, they can compare prices and pick the best deal.

🏪 Sellers (also called producers or suppliers)

  • Sellers are the people or businesses that offer goods and services for sale.
  • They create supply — that is, how much of a product is available in the market.
  • Sellers aim to make a profit (earning more money than it costs them to produce the good).
  • They decide what to produce, how much to produce, and at what price, based on their costs and what buyers want.

The Interaction Between Buyers and Sellers

When buyers and sellers interact in a market, two forces meet:

  • Demand (from buyers) — the quantity of a good buyers are willing and able to purchase at a given price.
  • Supply (from sellers) — the quantity of a good sellers are willing and able to offer at a given price.

This interaction determines the price of a good and the quantity that is bought and sold.

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