# SOLUTION: how much water should be added to 414 ounces of a 21% alcohol solution to get an 18% alcohol solution i set it up this way---.21(414)+W=.18(414 + W) but i came up with a neg an

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: how much water should be added to 414 ounces of a 21% alcohol solution to get an 18% alcohol solution i set it up this way---.21(414)+W=.18(414 + W) but i came up with a neg an      Log On

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 Click here to see ALL problems on Mixture Word Problems Question 363470: how much water should be added to 414 ounces of a 21% alcohol solution to get an 18% alcohol solution i set it up this way---.21(414)+W=.18(414 + W) but i came up with a neg answer 86.94 + W = 74.52 + .18W 12.42 = -.82W or .82W = -12.42 === -.1546 I don't think the answer should be negative.Answer by mananth(12270)   (Show Source): You can put this solution on YOUR website!how much water should be added to 414 ounces of a 21% alcohol solution to get an 18% alcohol solution how much water ------------0% alcohol-----------x ounces alcohol ------------------ 21% alcohol----------414 ounces alcohol------------------- 18% alcohol----------(x+414)ounces .. concentration equation ... 0+0.21*414=0.18(x+414) 0+86.94=0.18x+74.52 0.18x=86.94-74.52 0.18x=12.42 x=12.42/0.18 x= 69 ounces of water .. m.ananth@hotmail.ca