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30 June, 20:58

A 20kg solution is 15% alcohol. How much water should I add to make an 8% alcohol solution?

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  1. 30 June, 21:01
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    17.5 kg of water.

    Step-by-step explanation:

    The amount of alcohol in the 15% solution = 20*0.15 = 3kg.

    If 3 kg is equivalent to 8% solution

    then 100% is 3*100 / 8 = 37.5 kg.

    So the amount of water to be added to make 8% solution = 37.5 - 20

    = 17.5 kg.
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