assuming you're just talking about fluid, there are 2 and 1/3 fifths in a half gallon. a fifth is 750 ml, where a half gallon in 1.75L or, 1750ml, in regard to spirits. This isn't a true half gallon though, it's actually about 5 fluid ounces short, but American metrics say close enough.
Oh, dude, you're making me do math now? Alright, so a half gallon is 64 fluid ounces, and a fifth of liquor is 25.6 fluid ounces. So, if you divide 64 by 25.6, you get 2.5 fifths of liquor in a half gallon. But who's really counting when you're just trying to have a good time, right?
There are 2.5 of them.
7.5
One half gallon is enough to fill one half gallon.
There are 8 half cartons in one gallon.
No, one half is 50% and three fifths is 60%. One half also equals three sixths and not three fifths.
One half gallon is equal to 2 quarts.
Two x half gallon cartons is equal to one gallon.
Three fifths is bigger than one half. Two fifths is smaller than one half.
32 half pints makes one gallon
1/2 US gallon is 1,893cc