A. To find the number of plastic bags needed you take the total amount of snack mix and divide it into equal groups the size of 2/3 cup.
9 1/3 divided by 2/3.
28/3 broken into groups of 2/3 would be 14.
She'll need 14 bags.
B. This would be 4 groups of what she started with.
9 1/3 x 4
28/3 x 4/1
112/3 = 37 1/3 cups the second week.