Question

Jonah has read of his mystery book. He 1/4 has read 36 pages. How many pages are in the mystery book ?

Answer 1

144 pages

Explanation:

Johan has read
`(1)/(4)` of the book that is 36 pages.

To find the total number of pages in the book, note that

`(1)/(4)\ - \ 36\ \text{pages}\\ \\1\ - \ x\ \text{pages}`

Then

`((1)/(4))/(1)=(36)/(x)\\ \\(1)/(4)x=36\\ \\x=4\cdot 36\\ \\x=144\ \text{pages}`