Related to the Economics in Practice on page 55: The Amazon Kindle and the electronic textbooks available for the Kindle are complementary goods. Electronic textbooks and traditional, hard copy textbooks are substitute products. If the price of traditional, hard copy textbooks increases,

Question

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When the price of traditional, hard copy textbooks increases, consumers will likely look for cheaper alternatives. As electronic textbooks are substitutes for traditional textbooks, the demand for electronic textbooks will increase, leading to an increase in its quantity demanded. However, demand for the Kindle device itself may not necessarily increase as the electronic textbooks can be accessed through other devices as well. Therefore, choice B is the most appropriate answer.

Related to the Economics in Practice on Page 55: the Amazon