Answer: 1) 3 photos on each page, such that all 90 photos will be arranged in 30 pages.
2) 9 photos on each page, such that all 90 photos will be arranged in 10 pages.
3) 10 photos on each page, such that all 90 photos will be arranged in 9 pages.
Explanation:
The number 90 can be written as

Now, the three ways Jordan can arrange the photos in his album so he has the same number of photos on each page will be
From (1), Jordan can arrange 3 photos on each page, such that all 90 photos will be arranged in 30 pages.
From (2), Jordan can arrange 9 photos on each page, such that all 90 photos will be arranged in 10 pages.
From (3), Jordan can arrange 10 photos on each page, such that all 90 photos will be arranged in 9 pages.