document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=258476>Question 258476</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Beau Glaser wishes to strengthen a mixture  from 10% alcohol to 30% alcohol. How much pure alcohol should be added to 7 L of the 10% mixture? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #190280 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=190280\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .10*7+x=.30(7+x)<BR>\n" );
document.write( ".7+x=2.1+.3x<BR>\n" );
document.write( "x-.3x=2.1-.7<BR>\n" );
document.write( ".7x=1.4<BR>\n" );
document.write( "x=1.4/.7<BR>\n" );
document.write( "x=2 liters of pure alcohol is needed.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".10*7+2=.30(7+2)<BR>\n" );
document.write( ".7+2=.3*9<BR>\n" );
document.write( "2.7=2.7 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );