A librarian made a graph to show the types of books on a bookshelf. He still needs to add data to represent 3 animal books. =2books How many more history books and animal books combined are there than mystery books? Enter the answer in the box

Mystery: 3 books
History: 4 books
Sports: 1 and a half books
Travel: 1 book
Animals: no books

There are 5 more history and animal books combined than mystery books.

(4 history books + 2 animal books) - 3 mystery books = 5

So, there are 5 more history books and animal books combined than mystery books.