48oz + 0.17 oz = 48.17
Ever heard of "three two" beer? This is beer that is only 3.2% alcohol as sold in grocery stores in states like Colorado where real beer (i.e. 5% beer) has to be sold only in bonafide liquor stores.
Except, it isn't "three two" beer. I'm one of the few who checks labels and looks for things like 'alcohol by volume' (ABV) and 'alcohol by weight' (ABW) because I've lived and worked in various foreign countries and want to know how to argue mundane crap like who brews stronger beer.
In the U.S. we used to have ABW on the label and our beer said 4.0%. Then we switched to ABV and our beer said 5.0%. So all of a sudden we got the respect from our German friends (one of the places I worked) because our beer got stronger. Except it didn't. We just labeled it differently.
Ethyl alcohol has a specific gravity of 0.8 that of water, meaning it only weighs 80% of what water weighs. So, if you have a solution of 19 parts water and 1 part alcohol, the alcohol percentage can either be listed as 5% by volume or 4% by weight.
So, for our sneaky beer manufacturers who sell in grocery stores, their ultra-low alcohol beer (gee dad, it's only 3.2%!), it's really 4.0% if you rate it by ABV, alcohol by volume. That would be the fair comparison to our regular beer which is 5.0% ABV. But, to make the state government happy (by effectively fooling stupid people in the government) they took the 4.0 number and multiplied it by 0.8 to get 3.2. Just like our old beer was 4.0. They started dividing that by 0.8 and got 5.0. It all depends on what you want to display.
This kind of stuff really irked me when I worked as an electrochemist. My chemistry colleagues just told me to calculate everything in moles because then you don't have to worry about stupid naming conventions by weight or volume or whatever. Moles is moles in the chemisty world and normalizes everything.