After reading $\frac{4}{9} t h$ of a book, 30 pages are left. How many pages are there in the book?

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Solution

The correct option is A
54

Let the total number of pages in the book be $x$ .

$(\frac{4}{9} \times x) pages are read$

$Remaining pages = x - \frac{4 x}{9}$
$= \frac{5 x}{9} = 30$ $\Rightarrow 5 x = 30 \times 9$
$x = 54 pages$

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