document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=44886>Question 44886</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many liters (L) of a 10% silver iodide solution must be mixed with 7 L of a 4% silver iodide solution to get a 6% solution?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #29740 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=29740\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How many liters (L) of a 10% silver iodide solution must be mixed with 7 L of a 4% silver iodide solution to get a 6% solution? \r<BR>\n" );
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document.write( "Start: 7L of 4% solution has 0.04(7)=0.28 liters of active ingredient\r<BR>\n" );
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document.write( "Add: x liters of 10% solution which has 0.10x liters of active ingredient\r<BR>\n" );
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document.write( "End up with: x+7 liters of 6% solution which has 0.06(x+7) liters of active <BR>\n" );
document.write( "ingredient.\r<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "active + active = active<BR>\n" );
document.write( "0.28 + 0.10x=0.06x+0.42\r<BR>\n" );
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document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "28 +10x = 6x + 42<BR>\n" );
document.write( "4x = 14<BR>\n" );
document.write( "x=7/2= 3.5 liters (amount of 10% solution you need to add)\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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