# Question #0cfad

##### 1 Answer

#### Explanation:

So, you know that the price of a single copy varies depending on the number of books that are being purchased.

More specifically, if you buy *less than* 20 books, you pay *20 or more* books, you only have to pay

First, figure out how much money you have to pay when you buy **20 books**.

Now, you need to figure out the *minimum number* of books you that can buy at **full price** for more money.

If

Divide both sides of the equation by

The **minimum** number of books that you can buy at **full price** and still pay more than you would for a 20-book purchase at a discount is