The school library bought 540 new books, of which comic books accounted for one third, and the rest were literature and science books. The ratio of literature and art books to science and technology books is 4: 1.

540÷3= 180

Comics 180.

So there are 360 * * * 540- 180 literature and art books.

The ratio of literature and art books to science and technology books is 4: 1, so literature and art books account for 4/5 of 360 books and science and technology books account for 1/5 of 360 books.

So there are 360X4/5=288 literature and art books and 72 science and technology books.