A mathematical method for solving problems involving the mixing of substances with different prices or qualities to achieve a desired average result.
From Latin 'alligare' (to bind to, tie together). The term emerged in medieval mathematics and commerce, describing how to 'bind together' different valued commodities.
Alligation was the Excel spreadsheet of the Middle Ages—merchants used it to figure out how much cheap wine to mix with expensive wine to hit a profitable price point, making it essential for trade!
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