document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=995457>Question 995457</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a pharmacist needs 500 milligrams of a 20% phenobarbital solution but has only 5% and 25% phenobarbital solutions available. find out how many milligrams of each she should mix to get the desired solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #614203 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=614203\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a pharmacist needs 500 milligrams of a 20% phenobarbital solution but has only 5% and 25% phenobarbital solutions available. find out how many milligrams of each she should mix to get the desired solution? <BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "pheno + pheno = pheno<BR>\n" );
document.write( "0.05x + 0.25(500-x) = 0.20*500<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "5x + 25*500 - 25x = 20*500<BR>\n" );
document.write( "-20x = -5*500<BR>\n" );
document.write( "----<BR>\n" );
document.write( "x = 500/4<BR>\n" );
document.write( "x = 125 ml (amt of 5% solution needed)<BR>\n" );
document.write( "500-x = 375 ml (amt of 25% solution needed)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "-------<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );