Emily and Lily are reading the same copy of the same book for a summer reading Assignment • Emily has already read 15 pages. Emily reads 25 pages per day until the book is finished. • Lily has already read 30 pages. Lily reads 20 pages per day until the book is finished. One day, the two girls notice that they are on the same page. What page number are they on when they have read the same amount of the book? ​