document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=511334>Question 511334</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many gallons of water must be added to 40 gallons of 10% alcohol solution to produce an 8% alcohol solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #342164 by </B><A HREF=/tutors/aboutme.mpl?userid=Maths68><B>Maths68(1474)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Maths68><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=Maths68><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=342164\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Water <BR>\n" );
document.write( "Amount = x <BR>\n" );
document.write( "Concentration = 0% =0 (Water is pure therefore alcohal concentration will be 0%)<BR>\n" );
document.write( "================================================================================<BR>\n" );
document.write( "Alcohol<BR>\n" );
document.write( "Amount =40<BR>\n" );
document.write( "Concentration =10% = 0.10<BR>\n" );
document.write( "================================================================================<BR>\n" );
document.write( "Mixture<BR>\n" );
document.write( "Amount = (40+x) gallons<BR>\n" );
document.write( "Concentration = 8%=0.08<BR>\n" );
document.write( "=============================================================================== <BR>\n" );
document.write( "[Water Amount  *Concentration of Water] + [Alcohol Amount *Alcohol  Concentration ] = Amount of Mixture * Concentration of Mixture<BR>\n" );
document.write( "(x*0)+(40)*(0.10)=(0.08)*(40+x)<BR>\n" );
document.write( "0+4=3.2+0.08x<BR>\n" );
document.write( "4-3.2=0.08x<BR>\n" );
document.write( "0.8=0.08x<BR>\n" );
document.write( "0.8/0.08=0.08x/0.08<BR>\n" );
document.write( "10=x<BR>\n" );
document.write( "x=10<BR>\n" );
document.write( "=============================================================================== <BR>\n" );
document.write( "Water <BR>\n" );
document.write( "Amount = x =10 gallons<BR>\n" );
document.write( "Concentration = 0% =0\r<BR>\n" );
document.write( "\n" );
document.write( "Alcohol<BR>\n" );
document.write( "Amount =40 gallons<BR>\n" );
document.write( "Concentration =10% = 0.10\r<BR>\n" );
document.write( "\n" );
document.write( "Mixture<BR>\n" );
document.write( "Amount = (40+x) = (40+10) = 50 gallons<BR>\n" );
document.write( "Concentration = 8%=0.08 <BR>\n" );
document.write( "=============================================================================== <BR>\n" );
document.write( "10 gallons of water must be added to 40 gallons of 10% alcohol solution to produce a  50 gallons of 8% alcohol solution.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );