SOLUTION: How many liters of 70% alcohol must be mixed with 30 liters of 15% alcohol to make a mixture that is 60% alcohol?

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Question 356924: How many liters of 70% alcohol must be mixed with 30 liters of 15% alcohol to make a mixture that is 60% alcohol?
Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
mixture 1 + mixture 2 = total mixture

0.70x + 0.15(30) = 0.60(x + 30)

Can you solve for x?