document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1026517>Question 1026517</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist has 800g of a dye solution that is 20% of it original strength. How much dye must be added to increase the strength to 50%?\r<BR>\n" );
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document.write( "Please solve this question using two variables. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #641812 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=641812\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A chemist has 800g of a dye solution that is 20% of it original strength.<BR>\n" );
document.write( " How much dye must be added to increase the strength to 50%?<BR>\n" );
document.write( "Please solve this question using two variables.<BR>\n" );
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document.write( "Why would you use two variables, there is only one unknown here<BR>\n" );
document.write( "let x = amt of pure dye required<BR>\n" );
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document.write( "A typical mixture equation<BR>\n" );
document.write( "x + .20(800) = .50(x+800)<BR>\n" );
document.write( "x + 160 = .5x + 400<BR>\n" );
document.write( "x - .5x = 400 - 160<BR>\n" );
document.write( ".5x = 240<BR>\n" );
document.write( "x = 240/.5<BR>\n" );
document.write( "x = 480 g of pure dye required<BR>\n" );
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