Figure 3-1
-Suppose that when the price of hamburgers decreases, the Ruiz family increases their purchases of ketchup. To the Ruiz family,
A) hamburgers and ketchup are complements.
B) hamburgers and ketchup and substitutes.
C) hamburgers and ketchup are normal goods.
D) hamburgers are normal goods and hot dogs are inferior goods.

Question

Figure 3-1 
-Suppose that when the price of hamburgers decreases, the Ruiz family increases their purchases of ketchup. To the Ruiz family,
A) hamburgers and ketchup are complements. 
B) hamburgers and ketchup and substitutes. 
C) hamburgers and ketchup are normal goods. 
D) hamburgers are normal goods and hot dogs are inferior goods.

Quizplus · Accepted Answer

The fact that the Ruiz family increases their purchases of ketchup when the price of hamburgers decreases suggests that hamburgers and ketchup are complements – meaning that they are typically consumed together.

Figure 3-1 -Suppose That When the Price of Hamburgers Decreases, the Ruiz