What does a fifth of alcohol mean in terms of 5 fifths equals what?
A "fifth" is equal to one fifth of a gallon. Therefore, five
fifths would be equal to one gallon.
A "fifth" is now sold in 750 ml (where ml means milliliter)
containers (although still called a "fifth") and 750 ml can be
written as 0.75 L (where "L" means Liter) which is the same as 3/4
of a Liter. Therefore, five 750 ml (0.75 L) containers would be
equal to 3.75 L.
An equation for this could look like:
One Fifth of Liquor ~ 750 ml = 0.75 L = 3/4 L, therefore,
5 x One Fifth of Liquor ~ 5 x 750 ml = 5 x 0.75 L = 5 x 3/4 L,
therefore,
One Gallon ~ 3,750 ml = 3.75 L = 3 & 3/4 L
or more simply, 5 Fifths of Liquor is considered equal to 3
Liters & one Fifth... or a gallon if they sell your brand that
way.