Question

Daniel has read ​10% of a book. He has 18 more pages to finish. How many pages are there in the​ book?

Answer 1

If he has read 10%, 90% (18 pages) remain.
Let P represent the total number of pages in the book...
P x .90 = 18
To solve for P, divide both sides by .90
P = 18 / .90
P = 20
The book has 20 pages.