document.write( "Question 363470: how much water should be added to 414 ounces of a 21% alcohol solution to get an 18% alcohol solution\r
\n" ); document.write( "\n" ); document.write( "i set it up this way---.21(414)+W=.18(414 + W) but i came up with a neg answer\r
\n" ); document.write( "\n" ); document.write( "86.94 + W = 74.52 + .18W\r
\n" ); document.write( "\n" ); document.write( "12.42 = -.82W or .82W = -12.42 === -.1546\r
\n" ); document.write( "\n" ); document.write( "I don't think the answer should be negative.
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Algebra.Com's Answer #259161 by mananth(16946)\"\" \"About 
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how much water should be added to 414 ounces of a 21% alcohol solution to get an 18% alcohol solution
\n" ); document.write( "how much water ------------0% alcohol-----------x ounces
\n" ); document.write( "alcohol ------------------ 21% alcohol----------414 ounces
\n" ); document.write( "alcohol------------------- 18% alcohol----------(x+414)ounces
\n" ); document.write( "..
\n" ); document.write( "concentration equation
\n" ); document.write( "...
\n" ); document.write( "0+0.21*414=0.18(x+414)
\n" ); document.write( "0+86.94=0.18x+74.52
\n" ); document.write( "0.18x=86.94-74.52
\n" ); document.write( "0.18x=12.42
\n" ); document.write( "x=12.42/0.18
\n" ); document.write( "x= 69 ounces of water
\n" ); document.write( "..
\n" ); document.write( "m.ananth@hotmail.ca
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