In a bookstore, a book costs $5. When Sheryll bought 10 books, she was given a discount of $0.5 each. How much did Sheryll pay in all?
Instead of $5 each, a book costs $5 - $0.5 = $<<5-0.5=4.5>>4.5 each.
Sheryll paid $4.5/book x 10 books = $<<4.5*10=45>>45.
#### 45