After reading 7 by 9 of a book,40 pages are left.How many pages are there in the book?

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Solution

Pages read = 7/9
pages left == 2/9
let x be the total no of pages of the book
(2/9)x = 40 ( 2/9 of the pages of book is 40)
x = 40 9/2
x = 20*9
x = 180
Total pages of the book are 180.

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