Respuesta :

musiclover10045
Divide the number of pages read y the total number of pages in the book.

90 / 180 = 0.5

0.5 x 100 = 50% of the book has been read.
cupkakekawaii45
Diana has read 50% of the book. If you do 180 divided by 90 you get 2. In math you would divide anything by 2 to get what the middle of the number is, so that means that 90 would be half of 180. (sorry if this makes no sense i suck at explaining stuff)
Hope This Helps!

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