Final answer:
Jenny's higher utility score indicates she likes Snickers bars more than Sarah does, but utility is subjective and cannot be directly compared between individuals. We can conclude that Jenny's utility from a Milky Way must be less than from a Snickers bar since she prefers the latter.
Step-by-step explanation:
In comparing Jenny's and Sarah's satisfaction from eating a Snickers bar, using utils—a hypothetical unit of measurement for utility—we seek to determine the truth of several statements. We know for sure that Jenny's satisfaction is 30 utils and Sarah's is 15 utils. One statement we can definitively say is true is that Jenny likes Snickers bars more than Sarah does, solely based on the number of utils. Additionally, because Jenny prefers Snickers bars over Milky Way bars, it's logical to infer that Jenny's satisfaction from consuming a Milky Way bar must be less than 30 utils. However, the claim that Jenny likes Snickers bars twice as much as Sarah does is not necessarily true; while Jenny's utils are double Sarah's, utility is subjective and not directly comparable between individuals. Moreover, there is no basis to determine the relative preference of Sarah liking Snickers bars compared to Jenny liking Milky Way bars, nor can we assert that price is relevant without additional information.