SOLUTION: Two different mixtures of gasoline are available, one with 5% alcohol by volume and the other containing 12% alcohol. How many litres of the 12% mixture must be added to 765 L of t
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Question 1127834: Two different mixtures of gasoline are available, one with 5% alcohol by volume and the other containing 12% alcohol. How many litres of the 12% mixture must be added to 765 L of the 5% mixture to produce a mixture containing 9%alcohol? Answer by ikleyn(52781) (Show Source):
Let x = "How many litres of the 12% mixture must be added to 765 L of the 5% mixture to produce a mixture
containing 9% alcohol" is the value under the question.
Then your equation is
0.12x + 0.05*765 = 0.09*(x+765).
saying that the sum of amounts of the pure alcohol in ingredients is equal to that in the mixture.
Simplify and solve for x.
You will find there ALL TYPICAL mixture problems with different methods of solutions,
explained at different levels of detalization, from very detailed to very short.
Read them and become an expert in solution mixture word problems.
