Question

Billy put all his stickers into 30 large albums and 10 small albums. Each large album can hold 10 more stickers than each small album. 1/6 of his stickers were put into all the small album and the rest were put into the large albums. How many stickers can be put into one large album?
oobleck
If large pages have x stickers, then small pages have (x-10) stickers. So, assuming all the albums were completely filled, then
10(x-10) = 1/6 (10(x-10) + 30x)
x = 25