document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=749685>Question 749685</A>: <I><SPAN STYLE=\"word-break: break-all;\"> need help solving this problem please. <BR>\n" );
document.write( "A tank contains 55 gallons of a 55% solution of antifreeze. How much solution needs to be drained out and replaced with pure antifreeze to obtain a 70% solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #456119 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=456119\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The key here is to realize that you start with<BR>\n" );
document.write( "55 gallons and end up with 55 gallons<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+ ALIGN=MIDDLE  ALT=\"+x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = gallons of solution to be drained <BR>\n" );
document.write( "and replaced with pure antifreeze<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.55x+ ALIGN=MIDDLE  ALT=\"+.55x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = gallons of antifreeze removed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.55%2A55+=+30.25+ ALIGN=MIDDLE  ALT=\"+.55%2A55+=+30.25+\"   DISABLED_style= \"max-width:90%; height:auto;\" > gallons of antifreeze <BR>\n" );
document.write( "in original mixture<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+30.25+-+.55x+%2B+x+%29+%2F+55+=+.7+ ALIGN=MIDDLE  ALT=\"+%28+30.25+-+.55x+%2B+x+%29+%2F+55+=+.7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+30.25+%2B+.45x+%29+%2F+55+=+.7+ ALIGN=MIDDLE  ALT=\"+%28+30.25+%2B+.45x+%29+%2F+55+=+.7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+30.25+%2B+.45x+=+.7%2A55+ ALIGN=MIDDLE  ALT=\"+30.25+%2B+.45x+=+.7%2A55+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+30.25+%2B+.45x+=+38.5+ ALIGN=MIDDLE  ALT=\"+30.25+%2B+.45x+=+38.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.45x+=+8.25+ ALIGN=MIDDLE  ALT=\"+.45x+=+8.25+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+18.333+ ALIGN=MIDDLE  ALT=\"+x+=+18.333+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "18.333 gallons of solution must be drained and<BR>\n" );
document.write( "replaced with pure antifreeze<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+30.25+%2B+.45x+%29+%2F+55+=+.7+ ALIGN=MIDDLE  ALT=\"+%28+30.25+%2B+.45x+%29+%2F+55+=+.7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+30.25+%2B+.45%2A18.333+%29+%2F+55+=+.7+ ALIGN=MIDDLE  ALT=\"+%28+30.25+%2B+.45%2A18.333+%29+%2F+55+=+.7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+38%2C5+%2F+55+=+.7+ ALIGN=MIDDLE  ALT=\"+38%2C5+%2F+55+=+.7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+38.5+=+.7%2A55+ ALIGN=MIDDLE  ALT=\"+38.5+=+.7%2A55+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+38.5+=+38.5+ ALIGN=MIDDLE  ALT=\"+38.5+=+38.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );