If a book has 250 pages and you read 75, how many pages are left?

To determine how many pages are left in a book after reading a certain number of pages, you start with the total number of pages and subtract the number of pages that have been read. In this case, the book has a total of 250 pages, and if you have read 75 pages, you can calculate the remaining pages by using the equation:

Total pages - Pages read = Pages left.

By plugging in the numbers:

250 pages - 75 pages = 175 pages.

This calculation shows that after reading 75 pages, there are 175 pages remaining in the book. This number reflects the pages that have not yet been read. The other options do not align with this calculation.