the-price-of-textbooks-increases-and-the-quantity-demanded-of-e-books-also-incre

Question

The price of textbooks increases, and the quantity demanded of e-books also increases. What logical conclusion can be drawn?

Accepted Answer

Textbooks and e-books are substitutes.

Answer

Textbooks and e-books are complements.

Answer

Textbooks and e-books are unrelated.

Answer

Textbooks and e-books are luxury goods.