If I have a 24 ounce can of beer that is 8 percent alcohol: How many 12 ounce cans of 6 percent beer is that equal to?

I am a former brewer. This math problem was thrown at me by a buddy. I am normally very good at math; but this one threw me off. If you are going to tackle the problem; explain please how you got your answer. An experienced chemist or mathematician could do it. Please help, this math problem is aggravating me.
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