There are 4 sections in a library, each section contains 3,892 books and magazines. There are twice more magazines then books. How many books are there?

5189 books

Step-by-step explanation:

Let  the number of magazines = x

Let the number of books = b

Number of sections = 4

number of books and magazines per session = 3,892

Total number of books and magazines = 3,982 × 4 = 15,568

Number of magazines = 2 × number of books (There are twice more magazines than books.)

∴ x = 2b

∴ ratio of magazines to books = 2:1 (magazines doubles the books)

Therefore, number of books is calculated as follows:

3: 2

step-by-step explanation:

shorter piece is 2: 3, so just reverse it, and you get 3: 2