document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=408726>Question 408726</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how many gallons of 70% antifreeze needs to be added to 10 gallons of 30% antifreeze to get a 45% mix? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #287851 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=287851\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> how many gallons of 70% antifreeze needs to be added to 10 gallons of 30% antifreeze to get a 45% mix?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "active + active = active<BR>\n" );
document.write( "0.70x + 0.30*10 = 0.45(x+10)<BR>\n" );
document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "70x + 30*10 = 45x + 45*10<BR>\n" );
document.write( "25x = 15*10<BR>\n" );
document.write( "x = 6 gallons (amt. of 70% 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" );