The number of literature and art books in the corner of the class is four times that of science and technology books. There are more literature and art books than science and technology books 105. How many? Analysis: According to the classification of literature and art, the number of books is four times that of science and technology books, the number of available literature and art books is three times that of science and technology books (= 4- 1), and the number of known literature and art books is more than that of science and technology books 105.

Solution: 105/(4- 1)=35 (Ben)

35+ 105= 140 (Ben) or 35*4= 140 (Ben)

A: There are 140 literature books and 35 science books.