The school librarian has $100 to spend on some books for the school. She wants to order many copies of the same book so an entire classroom can read the book. Each copy costs $3.95. Shipping for the books will be $6.95.
She will get 23 books. So, first, you take the shipping away to get $93.05, then you divide $93.05 by $3.95 which equals 23.55 and you can't have half a book; so it's 23!
