There are 49 different books and 11 different movies in the ' crazy silly school ' series. If you read 45 of the movies and watched 31 of the books How many more movies than books have you read?
There are 49 different books and 11 different movies in the 'crazy silly school' series. 

If you read 45 of the movies and watched 31 of the books, then you have read 14 more movies than books.