Answer:
28 pages will be used by Ben
Explanation:
Ben has total number of pictures for Australia trip = 165
Now he decided to make a Photo Album
He put no. of pictures on 1 page of album = 6
Let x be the number of pages of the album used
So, He put total no. of pictures = 6x
We know that total pictures are 165
So,



So, 28 pages will be used by Ben