At a scrapbooking party, guests brought a certain number of photographs to use, based on how many pages they will be assembling. Stacy plans to assemble 6 small pages and 6 large pages and brought a total of 42 photographs to use. Carrie brought 19 photographs, which is enough to assemble 4 small pages and 1 large page. Assuming that the number of photographs on a page remains constant, how many photographs fit on a small page and a large page?