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23 April, 09:31

Jane has 60 liters of 70% of acid solution. How many liters of water must be added to form a solution that is 40% acid?

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  1. 23 April, 09:49
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    Let w = liters of water needed

    4.70 = acid in 40% solution

    4.70/70+w =.28

    28=.28. (70+w)

    70+w=100

    w=30

    30 liters of water is needed
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