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-   -   How much "stronger" is a drink with 100 proof alcohol than one with 80 proof alcohol? (https://www.askmehelpdesk.com/showthread.php?t=624203)

  • Jan 2, 2012, 01:50 PM
    djeung
    How much "stronger" is a drink with 100 proof alcohol than one with 80 proof alcohol?
    My friend and I disagree about how to compute the difference between two drinks, one with 100 proof vodka and one with 80 proof. By volume the difference is 10% (40% vs 50% by volume), but in reality, isn't the one with 50% by volume 25% stronger than the one with 40% by volume?

    In other words, how would this be answered:

    The drink with 100 proof alcohol is ______ (% here) stronger than the drink with 80 proof alcohol.
  • Jan 3, 2012, 07:14 AM
    ebaines
    Since "proof" is a measure of the liquor's alcohol content (proof number = 2 times the alcohol percentage), a 100 proof drink compared to an 80 proof drink is (100-80)/80 = 25% stronger.

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