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10 November, 07:37

A pharmacist has an 18% alcohol solution. How much of this solution and how much water must be mixed together to make 10 liters of a 12% alcohol solution?

write liters of solution and liters of water

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  1. 10 November, 09:53
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    0.18 x 10 = 1.8 L

    18% alcohol/3 = 6 x 2 = 12

    therefore 1.8/3 = 0.6 x 2 = 1.2L alcohol solution

    therefore 10L - 1.2L = 8.8L water
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