Here is a practical example using the concept of CVP analysis. My wife and I go grocery shopping together and when she sees two different size cans of beans, she'll ask me which is the better price? So let's try this. Look at the the three cans of beans and tell me which is the better value and how you came up with your evidence. (Hint: Most people make sweeping general comments that the larger volume is the best deal. Is that true here?) 16 oz can selling for $2.50 22 oz can selling for $3.40 36 oz can selling for $5.70