Michelle has read 0.05625 percent of a book. If she has read 18 pages, how many total pages are in the book?

You read 2/5 of the remainder on Sunday. That means 3/5 of the remainder are unread (1 - 2/5). It is given that 36 pages are unread. Therefore 3/5 of the remainder is equal to 36. Set up equation and solve for x which will be the remainder

3/5x=36

x=36 (5/3)

x=60

320 pages because 1/.05625=17.7777777778 than 17.7777777778x18=320