Automatically treating Pentacles as "years" (or even "months") doesn't always make sense within the context of the question, so I look at what is "reasonable" in light of the situation. If someone asks "How soon will I hear about my job application?" the only satisfactory estimate from a Pentacle card would be on the order of weeks or maybe a month or two. Anything beyond that might as well be translated as "never" (which is certainly within the realm of possibility and may in fact be the most accurate answer). I would simply tell the querent there is a delay in notification, so don't hold your breath. Come to think of it, "Don't hold your breath" is an entirely legitimate response too, without putting too fine a point on the timing. On the other hand, if a querent asks "I have Stage 4 cancer, how long will I live?" (I know, not an ethical question to answer, but hey, it's just an example), I would be all too happy to see the 10 of Pentacles as "years" but I might soft-peddle that optimism.
Bottom line: If you're in a "days-to-weeks" scenario and get a Pentacle, shift the scale accordingly to the outer limit of what's reasonable; if the fit still isn't perfect, hedge.