document.write( "Question 838391: You need 765 mL of a 30% alcohol solution. On hand, you have a 85% alcohol mixture. How much of the 85% alcohol mixture and pure water will you need to obtain the desired solution? \n" ); document.write( "
Algebra.Com's Answer #505071 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi,
\n" ); document.write( "How much of the 85% alcohol mixture(15% water) and pure water
\n" ); document.write( "to make 765 mL of a 30% alcohol solution (70% water)
\n" ); document.write( "Let x represent the ml of water needed to be added
\n" ); document.write( " water = water
\n" ); document.write( " \".15%2A%28765-x%29++%2B+x+=+.70%2A765%29\"
\n" ); document.write( " \"x+=+%28.55%2A765%29%2F.85+\" x = 495ml of water need to be added \n" ); document.write( "
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