document.write( "Question 438988: Mix a solution that is 40% alcohol with a solution that is 10% alcohol to make 225 mL of a solution that is 20% alcohol. How much of each solution should you use?
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Algebra.Com's Answer #303439 by rwm(914)\"\" \"About 
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x+y=225
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\n" ); document.write( ".4x+.1y=225*.2\r
\n" ); document.write( "\n" ); document.write( ".4(225-y)+.1y=225*.2\r
\n" ); document.write( "\n" ); document.write( "solve for y
\n" ); document.write( "then for x
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