The library bought books at $15 each and a video rack for $35. These purchases cost $395 altogether. How many books were bought?

Answer: 24 books

Step-by-step explanation:

What we know is that one book is 15 dollars

The other thing added to the total would be the video rack

The video rack cost is 35 dollars

If we take the amount 395 and subtract 35, we get a total that is unaffected by the video rack, and can be easily answered now

The total is 360, we are now able to divide 360 by 15, getting the total of 24 books