document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=241000>Question 241000</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a pharmacist needs 70L of a 50% alchohol solution but only has a 30% alchohol solution and a 80% alchohol solution how many L of each would make a 50% solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #176525 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=176525\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If a pharmacist needs 70L of a 50% alchohol solution but only has a 30% alchohol solution and a 80% alchohol solution how many L of each would make a 50% solution?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "alcohol + alcohol = alcohol<BR>\n" );
document.write( "0.30x + 0.80(70-x) = 0.50*70 <BR>\n" );
document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "30x + 80*70 - 80x = 50*70<BR>\n" );
document.write( "-50x = -30*70<BR>\n" );
document.write( "x = 42 L (amt. of 30% solution needed in the mixture)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "70-42 = 28 L (amt. of 80% solution needed in the mixture)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );