document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=394830>Question 394830</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many gallons of a 9% peroxide solution must be mixed with 3 gallons of a 15% peroxide solution to obtain a 12% solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #280171 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=280171\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How many gallons of a 9% peroxide solution must be mixed with 3 gallons of a 15% peroxide solution to obtain a 12% solution?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "active + active = active<BR>\n" );
document.write( "0.09x + 0.15*3 = 0.12(x+3)<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "9x + 15*3 = 12x + 12*3<BR>\n" );
document.write( "-3x = -3*3<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x = 3 gallons (amt of 9% solution needed in the mixture)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );