Emily has 85 books on her bookshelf of those books 20% or mysteries 18 or adventure stories and the rest of fantasies what is the simple blood ratio of fantasies to total books on her bookshelf

What is a blood ratio in this context?

To find the simple blood ratio of fantasies to the total number of books on Emily's bookshelf, we need to determine the number of fantasy books. We know that 20% of her books are mysteries and 18 books are adventure stories, which means that the remaining books must be fantasies.

Let's calculate the number of fantasies:
Total number of books on the shelf = 85 books
Number of mysteries = 20% of 85 = 0.20 * 85 = 17 books
Number of adventure stories = 18 books

To find the number of fantasy books, subtract the number of mysteries and adventure stories from the total number of books:
Number of fantasy books = Total number of books - Number of mysteries - Number of adventure stories
Number of fantasy books = 85 - 17 - 18 = 50 books

Now, we can calculate the simple blood ratio of fantasies to the total number of books:
Fantasies : Total books = Number of fantasy books : Total number of books
Fantasies : Total books = 50 books : 85 books

So, the simple blood ratio of fantasies to the total number of books on Emily's bookshelf is 50:85.