document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=472969>Question 472969</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist has a 30% acid solution and a 60% solution already prepared. How<BR>\n" );
document.write( "much of each of the two solutions should be mixed to form 300 mL of a 50%<BR>\n" );
document.write( "solution?\r<BR>\n" );
document.write( "\n" );
document.write( "Thank you in advance! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #324293 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=324293\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A chemist has a 30% acid solution and a 60% solution already prepared. How<BR>\n" );
document.write( "much of each of the two solutions should be mixed to form 300 mL of a 50%<BR>\n" );
document.write( "solution? <BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "Using 1-variable:<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "acid + acid = acid<BR>\n" );
document.write( "0.30x + 0.60(300-x) = 0.50*300<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "30x + 60*300 - 60x = 50*300<BR>\n" );
document.write( "-30x = -10*300<BR>\n" );
document.write( "x = 100mL (amt. of 30% solution needed)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "300-x = 200mL (amt. of 60% solution needed)<BR>\n" );
document.write( "===========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );