document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=651702>Question 651702</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A hairdresser mixes a 30% peroxide solution with a 10% peroxide solution to get 4 cups of20% peroxide solution. How much of the 10% peroxide solution did she use? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #407766 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=407766\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A hairdresser mixes a 30% peroxide solution with a 10% peroxide solution to get 4 cups of20% peroxide solution. How much of the 10% peroxide solution did she use?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "active + active = active<BR>\n" );
document.write( "0.30x + 0.10(4-x) = 0.20*4<BR>\n" );
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document.write( "30x + 10*4 - 10x = 20*4<BR>\n" );
document.write( "20x = 10*4<BR>\n" );
document.write( "x = 2 cups (amt. of 30% solution needed)<BR>\n" );
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document.write( "4-x = 2 cups (amt. of 10% solution needed)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=============== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );