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.

The time she takes to complete the book is?

7.5 Hours

Step-by-step explanation:

(18 pages per hour) * (x hours) = (135 pages)

18x pages = 135 pages

18x = 135

Divide both sides by 18 to get rid of the 18 and to get x on its own.

x = 135 / 18

x = 7.5

Mary would take 7.5 hours to complete the book.