document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=172661>Question 172661</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A farmer needs 65 gallons of weed killer solution. He has 35% weed killer solution which is too weak for the job and a 60% weed killer solution which is too strong. How many gallons of each solution should he mix to obtain 70 gallons of 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 #127527 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=127527\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A farmer needs 65 gallons of weed killer solution. <BR>\n" );
document.write( "He has 35% weed killer solution which is too weak for the job and a 60% weed killer solution which is too strong. <BR>\n" );
document.write( "How many gallons of each solution should he mix to obtain 70 gallons of a 50% solution?<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "active + active = active ingrediant<BR>\n" );
document.write( "0.35x + 0.60(70-x) = 0.50*70<BR>\n" );
document.write( "-------------------------------------\r<BR>\n" );
document.write( "\n" );
document.write( "35x + 60*70 - 60x = 50*70<BR>\n" );
document.write( "-25x = -10*70<BR>\n" );
document.write( "x = 28 (amt. of 35% killer needed in the mixture)<BR>\n" );
document.write( "70-x = 42 ( amt. of 60% killer needed in the mixture)<BR>\n" );
document.write( "====================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );