# SOLUTION: You need a 90% alcohol solution. On hand, you have a 60 mL of a 20% alcohol mixture. You also have 95% alcohol mixture. How much of the 95% mixture will you need to add to obtain t

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 Question 613567: You need a 90% alcohol solution. On hand, you have a 60 mL of a 20% alcohol mixture. You also have 95% alcohol mixture. How much of the 95% mixture will you need to add to obtain the desired solution?Answer by nerdybill(7008)   (Show Source): You can put this solution on YOUR website! You need a 90% alcohol solution. On hand, you have a 60 mL of a 20% alcohol mixture. You also have 95% alcohol mixture. How much of the 95% mixture will you need to add to obtain the desired solution? . Let x = amount (mL) of 95% mixture added then .95x + .20(60) = .90(x+60) .95x + 12 = .90x+54 .05x + 12 = 54 .05x = 42 x = 840 mL