document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=911303>Question 911303</A>: <I><SPAN STYLE=\"word-break: break-all;\"> PLEASE HELP ME PLEASE.<BR>\n" );
document.write( "Trical is ten times older than his son, Algeom. In 20 years, Trical's age will be 4 more than twice Algeom's age. How old was he when Algeom was born? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #553057 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=553057\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> One key thing to keep in mind is<BR>\n" );
document.write( "that the difference in their ages never changes<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+ ALIGN=MIDDLE  ALT=\"+s+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = son's age now<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+ ALIGN=MIDDLE  ALT=\"+f+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = father's age now<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+20+ ALIGN=MIDDLE  ALT=\"+s+%2B+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = son's age in 20 years<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+%2B+20+ ALIGN=MIDDLE  ALT=\"+f+%2B+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = father's age in 20 years<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+=+10s+ ALIGN=MIDDLE  ALT=\"+f+=+10s+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+%2B+20+=+2%2A%28+s+%2B+20+%29+%2B+4+ ALIGN=MIDDLE  ALT=\"+f+%2B+20+=+2%2A%28+s+%2B+20+%29+%2B+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------------------<BR>\n" );
document.write( "Substitute (1) into (2)<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10s+%2B+20+=+2%2A%28+s+%2B+20+%29+%2B+4+ ALIGN=MIDDLE  ALT=\"+10s+%2B+20+=+2%2A%28+s+%2B+20+%29+%2B+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10s+%2B+20+=+2s+%2B+40+%2B+4+ ALIGN=MIDDLE  ALT=\"+10s+%2B+20+=+2s+%2B+40+%2B+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8s+=+24+ ALIGN=MIDDLE  ALT=\"+8s+=+24+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+3+ ALIGN=MIDDLE  ALT=\"+s+=+3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+=+10s+ ALIGN=MIDDLE  ALT=\"+f+=+10s+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+=+10%2A3+ ALIGN=MIDDLE  ALT=\"+f+=+10%2A3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+=+30+ ALIGN=MIDDLE  ALT=\"+f+=+30+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The difference in their ages is <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+30+-+3+=+27+ ALIGN=MIDDLE  ALT=\"+30+-+3+=+27+\"   DISABLED_style= \"max-width:90%; height:auto;\" > , so<BR>\n" );
document.write( "the father was 27 when his son was born<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10s+%2B+20+=+2%2A%28+s+%2B+20+%29+%2B+4+ ALIGN=MIDDLE  ALT=\"+10s+%2B+20+=+2%2A%28+s+%2B+20+%29+%2B+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+10%2A3+%2B+20+=+2%2A%28+3+%2B+20+%29+%2B+4+ ALIGN=MIDDLE  ALT=\"+10%2A3+%2B+20+=+2%2A%28+3+%2B+20+%29+%2B+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+30+%2B+20+=+2%2A23+%2B+4+ ALIGN=MIDDLE  ALT=\"+30+%2B+20+=+2%2A23+%2B+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+50+=+46+%2B+4+ ALIGN=MIDDLE  ALT=\"+50+=+46+%2B+4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+50+=+50+ ALIGN=MIDDLE  ALT=\"+50+=+50+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );