Answer is as follows, using A and B for the two package sizes
A) 12.3-ounce package costs $2.99 .
B) 33.9-ounce package costs $8.74 .
Find the unit price for each size.
A) 2.99 / 12.3 = .34 per ounce
B) 8.74 / 33.9 = .26 per ounce
The 33.9 ounce size is the better buy based on the unit price of .26 per ounce