document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=62965>Question 62965</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many gallons of a 20% ammonia solution must be mixed with a 5% ammonia solution to create 20 gallons of 11% ammonia solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #43802 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=43802\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How many gallons of a 20% ammonia solution must be mixed with a 5% ammonia solution to create 20 gallons of 11% ammonia solution?<BR>\n" );
document.write( "Let \"x\" be amount of 20% solution; amount of ammonia is 0.2x gallons<BR>\n" );
document.write( "The \"20-x\" is amount of 5% solution: amount of ammonia is <BR>\n" );
document.write( "0.05(20-x)=0.1-0.02x gallons<BR>\n" );
document.write( "Amount of mixture is 20 gallons: amount of ammonia in it is 0.11(20)=2.2 gallons<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "ammonia + ammonia = ammonia<BR>\n" );
document.write( "0.2x + 0.1-0.02x=2.2<BR>\n" );
document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "20x+10-2x=220<BR>\n" );
document.write( "18x=210<BR>\n" );
document.write( "x= 11 2/3 gallons (amount of 20% solution)<BR>\n" );
document.write( "20-x= 8 1/3 gallons (amount of 5% solution)<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );