SOLUTION: You need a 30% alcohol solution. On hand, you have a 385 mL of a 20% alcohol mixture. You also have 85% alcohol mixture. How much of the 85% mixture will you need to add to obtain

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Question 1096727: You need a 30% alcohol solution. On hand, you have a 385 mL of a 20% alcohol mixture. You also have 85% alcohol mixture. How much of the 85% mixture will you need to add to obtain the desired solution?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
20%2A385%2B85%2Ax=30%28x%2B385%29
x, the volume in mL of the 85% alcohol needed.
Solve the equation for x.