Joelle wrote 9 pages in 1.5 hours. By unitary method, we found that she wrote 6 pages in 1 hour.
Given,
Joelle wrote 9 pages in 1.5 hours, that is, numerically
1.5 hours = 9 pages (1)
We have been asked that in 1 hour how many pages did joelle write in her diary, that is,
1 hour = x pages (2)
where x in the number of pages written in 1 hour.
Here we are going to apply unitary method.
So, according to the equation (1) and (2),
1.5 hrs. = 9 pages
1 hrs. = 9/1.5 pages
= 6 pages
Hence in 1 hour joelle can write 6 pages in her diary.
Learn more about unitary method here : https://brainly.com/question/23423168
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