Sentence splitting. I'd fix this:

To get the same number of each, the smallest amount of food Ashley can buy is 48 hot dogs and buns. Or 3 packages of hot dogs. And also 8 packages of buns.

to:

To get the same number of each, the smallest amount of food Ashley can buy is 48 hot dogs and buns. To do this, she should buy 3 packages of hot dogs. Also, she should buy 8 packages of buns.