Mary is reading a book that has 135 pages. She can read 18 pages in an hour.
If she takes h hours to finish reading the book, the equation that can be used to find the value of h is .
Mary can read 18 pages in 1 hour so every hour, she will read 18 pages meaning that the number of hours is the variable. Therefore 18 times however many hours is equal to 135 pages.
