document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=147693>Question 147693</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are 20 kilograms of a solution that is 10% salt. How many kilograms of salt must be added to make a solution that is 25% salt? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #108071 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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=108071\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ( 20 * 10% + x * 100% ) / ( 20 + x ) = 25%<BR>\n" );
document.write( "( 20 * 0.1 + x ) / ( 20 + x ) = 0.25<BR>\n" );
document.write( "( 2 + x ) / ( 20 + x ) = 0.25<BR>\n" );
document.write( "2 + x = 0.25( 20 + x )<BR>\n" );
document.write( "2 + x = 5 + 0.25x<BR>\n" );
document.write( "0.75x = 3<BR>\n" );
document.write( "x = 4kg salt </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );