document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=160147>Question 160147</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How much water must be evaporated from 240 gallons of a 3%salt solution to produce a 5% salt solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #118097 by </B><A HREF=/tutors/aboutme.mpl?userid=ptaylor><B>ptaylor(2198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ptaylor><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=ptaylor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=118097\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x=amount of water that needs to be evaporated\r<BR>\n" );
document.write( "\n" );
document.write( "Now we know that the amount of pure salt in the 240 gal (0.03*240) has to equal the amount of pure salt in the solution after the evaporation takes place(0.05(240-x)).  So our equation to solve is:\r<BR>\n" );
document.write( "\n" );
document.write( "0.03*240=0.05*(240-x)  get rid of parens and simplify<BR>\n" );
document.write( "7.2=12-0.05x  subtract 12 from each side<BR>\n" );
document.write( "7.2-12=12-12-0.05x  collect like terms<BR>\n" );
document.write( "-4.8=-0.05x divide each side by 0.05<BR>\n" );
document.write( "x=96 gal---------------------------------amount of water that needs to be evaporated\r<BR>\n" );
document.write( "\n" );
document.write( "CK<BR>\n" );
document.write( "0.03*240=0.05*144<BR>\n" );
document.write( "7.2=7.2\r<BR>\n" );
document.write( "\n" );
document.write( "Hope this helps---ptaylor\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );