Anh read a book
Source: 2016 AIME I #5
March 4, 2016
2016 AIME IAIME
Problem Statement
Anh read a book. On the first day she read pages in minutes, where and are positive integers. On the second day Anh read pages in minutes. Each day thereafter Anh read one more page than she read on the previous day, and it took her one more minute than on the previous day until she completely read the page book. It took her a total of minutes to read the book. Find .