Question

Out of the total books pranab's bookshelf, 2/7 of the books are magazines, 1/8 of the remaining are autobiographies .What fraction of books in the bookshelf are autobiographies?

Answer 1

Answer:

let total books be 1

now ,2/7 of books are magazines

so, left books = 1-(2/7)=5/7

according to question autobiographies are

(1/8) of left books

i.e. (1/8)of(5/7)=5/56