Question

After reading 7/9 of a book, 40 pages are left. Find the total number of pages in the book​

Answer 1

180 pages

Explanation:

let x be the number of pages in the book , then

`(7)/(9)` x + 40 = x ( multiply through by 9 to clear the fraction )

7x + 360 = 9x ( subtract 7x from both sides )

360 = 2x ( divide both sides by 2 )

180 = x

The total number of pages in the book is 180