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3 December, 18:28

How many cups of pure water should be mixed with 9.5 cups of a 40% acid solution to dilate it into a 4% acid solution

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  1. 3 December, 20:46
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    (8.5 (0.9)) / (8.5 + x) = 1/25

    191.25 = 8.5 + x = > x = 182.75 cups
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