Example

Equilibrium in the Second-Hand Textbook Market (Figure 8.3)

In the market for second-hand textbooks, as illustrated in Figure 8.3, the equilibrium point (A) is where the supply and demand curves intersect. This corresponds to an equilibrium price (P*) of $8 and an equilibrium quantity (Q*) of 24 books. The market clears at this price because the number of buyers willing to pay $8 or more (24) equals the number of sellers willing to accept $8 or less (24).

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Updated 2026-05-02

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