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15 ✔

I think it's 15!
Because the big glass containing the same amount of milk, as the smaller glass is emerged in the fluid.

Might be wrong:)

EDIT: Ah, @loonatic has solved it only 15 hours in advance of me:D

#only hahahha, at least you got it right too! xD

My anwers: 10

Well, I think you're wrong there :P

This post has received a 0.39 % upvote from @drotto thanks to: @banjo.