Joint Surplus Definition

Condition for Potential Surplus from Trade

Joel Waldfogel

Borrowing and Lending as a Source of Mutual Gain

Analyzing a Simple Transaction

Which of the following statements provides the most accurate and fundamental explanation for why two parties willingly engage in a voluntary exchange?

If two individuals agree to a voluntary trade, it logically follows that both of them must end up in a better position than they were in before the transaction took place.

Explaining the Motivation for Trade

Match each term on the left with the scenario that best illustrates it on the right. Each term describes a key aspect of a voluntary transaction.

The Rationale Behind a Simple Transaction

The primary motivation for two parties to voluntarily engage in a transaction is the prospect of achieving ______, which represents the net benefits they each receive compared to not trading at all.

A potential buyer is willing to pay a maximum of $80 for a concert ticket. A potential seller values the same ticket at $60, meaning they would sell it for any amount equal to or greater than $60. Considering only these two individuals, in which of the following situations are the potential gains from exchange NOT realized?

Calculating Benefits from a Voluntary Transaction

A student is willing to sell their used textbook for any price of $40 or more. Another student is willing to buy that same textbook for any price up to $90. If they agree on a price of $70, which of the following statements accurately describes the outcome of this transaction?

Relationship Between Economic Rent, Joint Surplus, and Gains from Trade

Economic Rent