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Note that the numbers are staggered, column to column, according to the ratio indicated at the top of the chart. So if you pour the paint to the line marked 1 in the first column of the 8:1:1 section, you only need to add enough of the second component (the activator, in our case) to bring the level up to the 1 mark in the second column in the 8:1:1 chart. If we had a third component to add, we'd just pour until it reached 1 in the third column. That's all there is to it-the cup has the ratios figured out, so you don't have to do any math.