John and Linda Are Arguing About the Definition of Density

question 23

Multiple Choice

John and Linda are arguing about the definition of density. John says the density of an object is proportional to its mass. Linda says the object's mass is proportional to its density and to its volume. Which one, if either, is correct?

• A) They are both wrong.
• B) John is correct, but Linda is wrong.
• C) John is wrong, but Linda is correct.
• D) They are both correct.
• E) They are free to redefine density as they wish.

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Definitions:

Marginal Productivity Theory

A principle in economics that explains how the value of an economic input is determined by its marginal productivity, suggesting that factors of production are paid at rates equal to their productivity at the margin.

Labor-Demand Schedule

A representation of the quantity of labor that employers are willing to hire at different wage rates.

Resource Demand

The demand for resources (inputs) required to produce goods and services, influenced by changes in output and productivity.

Purely Competitive

A market structure characterized by a large number of small firms, homogenous products, free entry and exit, and perfect information, leading to firms being price takers.