please take a look at this mathmical formula, as expressed by a diet/food...

[cautiouscautious2005]

...author. I believe the semantics.... I believe the semnatics of the authors math is wrong. I believe she has it backwards. Her comment is:

"A food's energy density can be found by dividing the weight of the portion in grams by the calories in that portion. Look at your food labels: for example, one cup of Cheerios has 100 calories and weighs 28 grams. The energy density of a cup of Cheerios, then, is 100 ÷ 28 = 3.5."

But, in reality, shouldn't she be saying that one must DIVIDE the CALORIES of the portion (100) by the weight of the portion in grams (28)???? To me dividing the calories by the weight of the portion of grams would then be what she is trying to say: 100÷28=3.5

[Puzzling]

Yes, her description in words doesn't match with her sample expression. They are saying the exact opposite.

C/g or g/C ?

I think she meant to have Calories/gram so that the "energy density" is higher for higher calorie foods.