19. A bookstore has 15,000 books in stock, of which 60 percent are paperback and 40 percent are hardcover. All of the bo
Posted: Wed May 11, 2022 3:01 pm
19. A bookstore has 15,000 books in stock, of which 60 percent are paperback and 40 percent are hardcover. All of the books are either fiction or nonfiction. If 4500 of the books are nonfiction, and 2500 of the nonfiction books are paperback, how many of the books are both fiction and hardcover?