Diminishing Marginal Rate of Substitution

A castaway on a desert island has a large stockpile of coconuts but only a single bottle of fresh water. Considering coconuts and water as two goods, which statement best describes the castaway's situation at their current consumption point?

Indifference Curves and Relative Scarcity

Trade-offs in a Student's Schedule

A consumer is choosing between bundles of two goods: books (plotted on the vertical axis) and movie tickets (plotted on the horizontal axis). Their preferences are represented by a standard, convex-to-the-origin indifference curve. Match each consumption scenario with the corresponding description of the consumer's willingness to trade and the shape of their indifference curve at that point.

A consumer is choosing between bundles of two goods: books (plotted on the vertical axis) and movie tickets (plotted on the horizontal axis). Their preferences are represented by a standard, convex-to-the-origin indifference curve. Match each consumption scenario with the corresponding description of the consumer's willingness to trade and the shape of their indifference curve at that point.

A hiker lost in the desert has a backpack full of energy bars but only half a bottle of water left. At this point, the hiker's willingness to trade a large number of energy bars for a single bottle of water would be very high.

A coffee enthusiast has a large pantry full of everyday coffee beans but only a very small amount of a rare, single-origin bean. They are considering trading some of their everyday beans for an additional ounce of the rare beans. At their current consumption point, which statement best describes their willingness to trade?

Willingness to Trade and Relative Scarcity

The Comic Book Collector's Dilemma

A consumer is moving down along a standard, convex-to-the-origin indifference curve, substituting Good Y (on the vertical axis) for Good X (on the horizontal axis). Arrange the following descriptions of this process in the correct logical order.