document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=818244>Question 818244</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many mililiters of a 10% HCl solution and a 30% HCl solution should be mixed to make 200 mililiters of a 15% HCl solution? Hurry! I have to go to class soon! Thanks for the help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #492434 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=492434\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x + y = 200<BR>\n" );
document.write( ".10x + .30y = .15*200 = 30<BR>\n" );
document.write( "solve first equation for x<BR>\n" );
document.write( "x = 200 -y<BR>\n" );
document.write( "now substitute for x in second equation<BR>\n" );
document.write( ".10*(200 - y) + .30y = 30<BR>\n" );
document.write( "20 -.10y + .30y = 30<BR>\n" );
document.write( ".20y = 10<BR>\n" );
document.write( "y = 50<BR>\n" );
document.write( "x = 150<BR>\n" );
document.write( "check answers in second equation<BR>\n" );
document.write( ".10*150 + .30*50 = 30<BR>\n" );
document.write( "15 + 15 = 30<BR>\n" );
document.write( "30 = 30<BR>\n" );
document.write( "answers check<BR>\n" );
document.write( "therefore we need 150 ml of 10% HCI solution and 50 ml of 30% HCI solution<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );