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21 June, 14:53

Marie mixes 16 liters of 78% acid solution with a 25% acid solution to make a 41% acid solution. How many liters of 25% solution did she use? 8 liters 12 liters 13.7 liters 37 liters

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  1. 21 June, 18:13
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    16 liters x 0.78 = 12.48 liters

    0.25x + 12.48 = 0.41 (16+x)

    0.25x+12.48 = 6.56 + 0.41x

    5.92 = 0.16x

    x = 5.92/0.16 = 37 liters
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