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15 May, 23:24

How many gallons each of 25% alcohol and 5% alcohol should be mixed to obtain 20 gallons of 12% alcohol?

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  1. 16 May, 01:19
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    Should've put this in mathematics, you know? But don't worry, mistakes happen!

    Though, in order to do this problem, we need to add 20 for the total gallon.

    Let's use X for a placeholder to determine the amount, as the gallon of 25% alcohol and percentages can be in decimal forms. It'd be 0.25x gallons worth of alcohol afterwards. We then add 20-x gallons to 5% of alcohol, which is 0.05 (20-x).

    This would then allow us to find the sum of 20 gallons to 20% of alcohol, containing at least 0.2 (20) gallons of the alcohol.

    We'd then be able to develop this equation;

    0.25x + 0.05 (20-x) = 0.2 (20).

    And then so on the sequence continues ...

    0.25x + 1 - 0.05x = 4

    0.2x = 3

    x = 3/0.2

    We'd then be able to come to a conclusion that;

    1. X equals 15 gallons of 25% alcohol

    2. 20-x equals 5 gallons of 5% alcohol.
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