document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=206292>Question 206292</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please Help!!<BR>\n" );
document.write( "A pharmicist wishes to mix a solution that is 5% minoxisil. She has on hand 100 ml of a 3% solution & wishes to add some 7% solution to obtain the desired 5% solution. How much 7% solution should she add?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #155858 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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/cgi-bin/show-face.mpl?user=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=155858\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x=\"ml of added 7% solution\"\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "(3%)(100) + (7%)(x) = (5%)(100 + x)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "multiplying by 100 to clear percentages ___ 300 + 7x = 500 + 5x\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "2x = 200 ___ x = 100\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "this makes sense ...<BR>\n" );
document.write( "___ you would expect that mixing equal volumes of different concentrations would give the average of the concentrations </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );