document.write( "Question 739687: You need a 15% alcohol solution. On hand, you have a 195 mL of a 35% alcohol mixture. How much pure water will you need to add to obtain the desired solution?
\n" ); document.write( "You will need
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\n" ); document.write( "idk how to do this;(
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Algebra.Com's Answer #451265 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let \"+w+\" = ml of pure water to be added
\n" ); document.write( "\"+.35%2A195+=+68.25+\" ml of alcohol in 35% mixture
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\n" ); document.write( "\"+68.25+%2F+%28+195+%2B+w+%29+=+.15+\"
\n" ); document.write( "\"+68.25+=+.15%2A%28+195+%2B+w+%29+\"
\n" ); document.write( "\"+68.25+=+29.25+%2B+.15w+\"
\n" ); document.write( "\"+.15w+=+39+\"
\n" ); document.write( "\"+w+=+260+\"
\n" ); document.write( "260 ml of pure water to be should be added
\n" ); document.write( "check:
\n" ); document.write( "\"+68.25+%2F+%28+195+%2B+w+%29+=+.15+\"
\n" ); document.write( "\"+68.25+%2F+%28+195+%2B+260+%29+=+.15+\"
\n" ); document.write( "You can check it
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