The answer is not a dozen... Six of one and half a dozen of the other means you have two portions the same - just referred to by different names. So it means you either have two equal portions, or the portion you are comparing with someone else's portion is equal - therefore you have one portion equal to someone else's portion It's an English language idiom.
No rofl I've got a crate of 24 cans of Stella and six four packs. Which do you want? Meh. Six of one and half a dozen of the other. I'll take the slab. It's a comparative idiom not an additive one
Eh. I'm horrible at Math. Looking at this thread makes me wanna throw up. Dattebanette which is why I skipped school today. 8(
Convert the six to half dozens then add said half dozens and therefore u get one whole dozen which is 12