Question

Rosa has read 72 pages of a book. These pages make up 45% of the book. Select from the drop-down menu to correctly identify the total number of pages in the book. There are a total of pages in the book.

Answer 1

Solution:

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Given:
Rosa has read 72 pages of a book. These pages make up 45% of the book.

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To find:

The total number of pages in the book.

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Let the total number of books be x,.

Then,

=>45% of x = 72,.

=>$\frac{45}{100} x = 72$

=> $\frac{9}{20} x = 72$

=> $x = 72 ( \frac{20}{9} )$

=> $x = 8(20)$

=> x =160,..

∴ There are 160 pages in the book.

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                                       Hope it Helps !!

Answer 2

Total number of pages in book = x

45/100x = 72
9/20 x = 72
x. = 8*20
= 160