SOLUTION: You need 320 mL of a 55% alcohol solution. On hand, you have a 80% alcohol mixture. How much of the 80% alcohol mixture and pure water will you need to obtain the desired solution?

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Question 863865: You need 320 mL of a 55% alcohol solution. On hand, you have a 80% alcohol mixture. How much of the 80% alcohol mixture and pure water will you need to obtain the desired solution?
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!


Hi

   water  =  water

 .20x + x = .45(320 + x)

        x = .25(320)/.55 

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