document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=787043>Question 787043</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if you have a 40% alcohol solution and a 70% alcohol solution, how much of each do you need to make 20 gallons of a solution that is 50% alcohol? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #478051 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=478051\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if you have a 40% alcohol solution and a 70% alcohol solution, how much of each do you need to make 20 gallons of a solution that is 50% alcohol?<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "alch + alch = alch<BR>\n" );
document.write( "0.40x + 0.70(20-x) = 0.50*20<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "40x +70*20 - 70x = 50*20<BR>\n" );
document.write( "-30x = -20*20<BR>\n" );
document.write( "x = (2/3)20 = 13 1/3 gallons (amt. of 40% solution needed)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "20-x = 6 2/3 gallons (amt. of 70% solution needed)<BR>\n" );
document.write( "==============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );