document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=380090>Question 380090</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine the amount of a 25% acid solution and a 80% acid solution needed to make 250 mL of a 40% acid solution.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #269774 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=269774\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Determine the amount of a 25% acid solution and a 80% acid solution needed to make 250 mL of a 40% acid solution. <BR>\n" );
document.write( "---------------------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "acid + acid = acid<BR>\n" );
document.write( "0.25x + 0.80(250-x) = 0.40*250<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "25x + 80*250 - 80x = 40*250<BR>\n" );
document.write( "----<BR>\n" );
document.write( "-55x = -40*250<BR>\n" );
document.write( "x = 181.82mL (amt. of 25% solution needed in the mixture)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "250-181.82 = 68.18mL (amt. of 80% solution needed in the mixture)<BR>\n" );
document.write( "=========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );