I was asked to create one problem for my class (Cost Control: Hospitality) so that my classmates could solve it for practice. I wanted to submit them here to make sure they're solvable.

The Pleasant Meadows Restaurant uses frozen ground beef packed in 10-pound poly bags for many of its soup and casserole items. The per-bag purchase cost of all bags received in January was $30. Use the info below to calculate the value of ground beef inventory at the end of January: