Question 1119116
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Here are two other solution methods for this kind of problem....<br>
(1) The 2 liters of 6% baneberry extract contain 2(.06) = 0.12 liters of extract.<br>
After the water is added, those 0.12 liters of extract are now 4% of the mixture; that means the amount of the mixture is 0.12/0.04 = 3 liters.<br>
So the amount of water added was 3-2 = 1 liter.<br>
(2) You are mixing two ingredients with 6% and 0% extract.  The percentage of the mixture, 4%, is "twice as close" to 6% as it is to 0%; that means the mixture must contain twice as much of the 6% ingredient as the 0% ingredient.  So the 2 liters of the 6% ingredient is twice the amount of the 0% ingredient, making the amount of the 0% ingredient 1 liter.