document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=301849>Question 301849</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Alfalfa meal contains 2% nitrogen by weight.  Bat guano contains 10% nitrogen by weight.  How many pounds of each should be mixed together to make 7 pounds of fertilizer that is 8% nitrogen? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #216435 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=216435\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Alfalfa meal contains 2% nitrogen by weight. Bat guano contains 10% nitrogen by weight. How many pounds of each should be mixed together to make 7 pounds of fertilizer that is 8% nitrogen?<BR>\n" );
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document.write( "Let \"A\" be the weight of Alfalfa meal.<BR>\n" );
document.write( "Let \"B\" be the weight of Bat guano.<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "Weight Equation: A + B = 7<BR>\n" );
document.write( "nitrogen + nitrogen = nitrogen<BR>\n" );
document.write( "0.02A + 0.10(7-A) = 0.08(7)<BR>\n" );
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document.write( "Multiply thru by 100 and solve for \"A\":<BR>\n" );
document.write( "2A + 10*7 - 10A = 8*7<BR>\n" );
document.write( "-8A = -3*7<BR>\n" );
document.write( "A = 3/8 lbs (amt of Alfalfa meal needed in the mixture)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "B = 7-(3/8) = (56/8)-(3/8) = 53/8 lbs (amt of Bat guano needed in the mix)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
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