document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=583572>Question 583572</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A 20% iodine solution is mixed with a 70% iodine solution to produce 5 gallons of 50% Iodine solution. How many gallons of each solution are needed? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #372507 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=372507\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">     A 20% iodine solution is mixed with a 70% iodine solution to produce 5 gallons of 50% Iodine solution. How many gallons of each solution are needed?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = amount (gallons) of 20% solution<BR>\n" );
document.write( "then<BR>\n" );
document.write( "5-x = amount (gallons) of 70% solution<BR>\n" );
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document.write( ".20x + .70(5-x) = .50(5)<BR>\n" );
document.write( ".20x + 3.5-.70x = 2.5<BR>\n" );
document.write( "3.5-.50x = 2.5<BR>\n" );
document.write( "-.50x = -1<BR>\n" );
document.write( "x = -1/(-.50)<BR>\n" );
document.write( "x = 2 gallons (of 20% solution)<BR>\n" );
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document.write( "70% solution:<BR>\n" );
document.write( "5-x = 5-2 = 3 gallons<BR>\n" );
document.write( " </SPAN>\n" );
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