Respuesta :
Answer: A) [tex]\dfrac{b}{10}[/tex]
Step-by-step explanation:
Given : A bookstore is having a sale in which customers can purchase 10 books for a price of b dollars.
i.e. the cost of 10 books = b
Then, by applying the unitary method , the price of each book will be [tex]\dfrac{b}{10}[/tex]
Therefore, the expression represents the price of a single book is [tex]\dfrac{b}{10}[/tex].