A bookshelf contains 45 books, 30 of which are hardcover and 20 of which are fiction. What is the maximum number of books that are both hardcover and fiction?	Pick one:
A) 10 B) 15 C) 18 D) 20 E) 30
Total Books = 45   Hard Cover = 30   Non hardcover = 15   Fiction = 20   Non-Fiction = 25   Maximum number of Hardcover fiction will be 20( Assuming All the Fiction Books are Hard Cover )   Hence, the correct answer will be (20)
<result>D</result>
A bookshelf contains 45 books, 30 of which are hardcover and 20 of which are fiction. What is the maximum number of books that are both hardcover and fiction?