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Thanks for the reply, but it doesn’t entirely address my issue. I want to establish a cost-per-serving to allow a cost comparison between foods. If I start with the package recommendations for serving size, it would allow that. My dog may eat more or less than the recommendation, but the comparison will still be valid.
Here’s an example:
Dog Food “A” costs $28 for 14 lbs and recommends a median serving of 4 cups.
Dog Food “B” costs $25 for 14 lbs and recommends a median serving of 5 cups.
Which costs more? I don’t know, since I don’t know how many cups are in a pound. I actually did weigh two different foods and found a weight of 4 oz/cup for one and about 5 oz/cup for another.
If I apply these to the hypothetical foods above, I get:
Food “A” has 14 servings/package or $2/serving
Food “B” has about 9 servings/pkg or about $2.77/serving.
Of course, if I switched my dog from A to B and continued to feed the same amount, my cost would still be higher than “A” ($2.32/serving), and the dog would probably lose weight.