Question

Sophia finished 2/3 of a book. She calculated that she finished 90 more pages than she has yet to read. How long is her book?


Full explanation needed
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Answer 1

Answer:

270 pages

Step-by-step explanation:

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

She finished 2/3x pages.

Then , she has x-2/3x = 1/3x pages left.

2/3x - 1/3x = 90

1/3x = 90

x = 270

So, the book is 270 pages long.

hope it helps you.

Answer 2

Answer:

Given 2/3 x = x - 90

Simplifying; 2/3x - x = -90

-1/3 x = -90

x = 270

Answer the book has 270 pages.

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