document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=795330>Question 795330</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemistry student needs 600 ml of a 6% solution. How much 10% and 4% solutions need to be mixed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #480902 by </B><A HREF=/tutors/aboutme.mpl?userid=wilft1><B>wilft1(217)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=wilft1><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=wilft1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=480902\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> this one is solved with 2 equations\r<BR>\n" );
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document.write( "x + y = 600<BR>\n" );
document.write( "10x + 4y = 6<BR>\n" );
document.write( "multiply 600 by 6<BR>\n" );
document.write( "x + y = 600<BR>\n" );
document.write( "10x + 4y = 3600<BR>\n" );
document.write( "multiply the top line by -4<BR>\n" );
document.write( "-4x - 4y = -2400<BR>\n" );
document.write( "10x + 4y = 3600<BR>\n" );
document.write( "add the two lines together<BR>\n" );
document.write( "6x = 1200<BR>\n" );
document.write( "divide both sides by 6<BR>\n" );
document.write( "x = 200<BR>\n" );
document.write( "now that we know the value for x, plug that into the original equation<BR>\n" );
document.write( "10(200) + 4y = 3600<BR>\n" );
document.write( "2000 + 4y = 3600<BR>\n" );
document.write( "4y = 1600<BR>\n" );
document.write( "y = 400<BR>\n" );
document.write( "x = 200, y = 400<BR>\n" );
document.write( "so you will need 200 ml of the 10 percent solution and 400 ml of the 4 percent solution </SPAN>\n" );
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