# After reading 7/9 of a book 40 pages are left.How many pages are their in a book?

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no of pages he read=7/9

no. of pages left=2/9 or 40

sol=>2/9=40 pgs

1/9=40/2

=10 pgs

given NO of books =1

7/9 of the book was readed then the remaining book is =1-7/9 =2/9

2/9 = 40

1/9=40/2

1/9=20

so the total book pages = 20 *9 = 180 pages