Betty and Bob Are 12-Year-Old Twins

question 80

Multiple Choice

Betty and Bob are 12-year-old twins. Which of the following is probably an accurate statement about their physical development?

• A) Betty may be taller and heavier than Bob.
• B) Bob may be taller and heavier than Betty.
• C) Bob and Betty, because they are twins, should be about the same height and weight.
• D) Betty should be heavier, but Bob should be taller.

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Definitions:

Supply Curve

A graph showing the relationship between product price and quantity of product that a seller is willing and able to supply.

Quantity Supplied

The amount of a certain good or service that producers are willing to supply at a given price.

Inferior Good

A type of good for which demand decreases as the income of consumers increases, inversely related to the consumer's income.

Complementary Good

A product that is consumed with another product, where demand for one increases demand for the other.