Answer
Option 1: Packages of pencils and erasers - greatest number of identical boxes: 6, number of each supply item: 12 pencils and 6 erasers. Option 2: Notebooks and folders - greatest number of identical boxes: 4, number of each supply item: 4 notebooks and 4 folders. Option 3: Erasers, packages of markers, and folders - greatest number of identical boxes: 3, number of each supply item: 6 erasers, 10 markers, and 3 folders. The fourth option would not work because it would not be possible to pack the supplies into identical boxes. To order the same number of each item, Lana would need to order 12 boxes of pencils, 10 boxes of markers, 4 boxes of notebooks, 6 boxes of erasers, and 15 boxes of folders. She would get a total of 120 pencils, 100 markers, 40 notebooks, 60 erasers, and 150 folders.