document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=824184>Question 824184</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The father and the son together have 46 years. Three years ago, the father was 4 times older than the son. How old is the son, and how old is the father?\r<BR>\n" );
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document.write( "So, I tried to find a solution.\r<BR>\n" );
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document.write( "          3 years ago         <BR>\n" );
document.write( "father    4x                 <BR>\n" );
document.write( "son       x  \r<BR>\n" );
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document.write( "          now<BR>\n" );
document.write( "father    46-x<BR>\n" );
document.write( "son       x                 \r<BR>\n" );
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document.write( "4x+3+x+3=46-x+x<BR>\n" );
document.write( "5x+6=46 (I omitted the -x and the x)<BR>\n" );
document.write( "5x=46-6<BR>\n" );
document.write( "5x=40<BR>\n" );
document.write( "x=40/5<BR>\n" );
document.write( "x=8\r<BR>\n" );
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document.write( "So the son is 8 years old and the father is 46-8=38.<BR>\n" );
document.write( "Actually, my question is - is my solution right (correct)? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #496151 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=496151\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 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( "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( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+-+3+ ALIGN=MIDDLE  ALT=\"+f+-+3+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = father's age 3 yrs ago<BR>\n" );
document.write( "<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;\" > = son's age 3 yrs ago<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+f+=+46+ ALIGN=MIDDLE  ALT=\"+s+%2B+f+=+46+\"   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+-+3+=+4%2A%28+s+-+3+%29+ ALIGN=MIDDLE  ALT=\"+f+-+3+=+4%2A%28+s+-+3+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+-+3+=+4s+-+12+ ALIGN=MIDDLE  ALT=\"+f+-+3+=+4s+-+12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4s+-+f+=+9+ ALIGN=MIDDLE  ALT=\"+4s+-+f+=+9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "Add (1) and (2)<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+f+=+46+ ALIGN=MIDDLE  ALT=\"+s+%2B+f+=+46+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4s+-+f+=+9+ ALIGN=MIDDLE  ALT=\"+4s+-+f+=+9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+5s+=+55+ ALIGN=MIDDLE  ALT=\"+5s+=+55+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+11+ ALIGN=MIDDLE  ALT=\"+s+=+11+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and, since<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+f+=+46+ ALIGN=MIDDLE  ALT=\"+s+%2B+f+=+46+\"   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+=+46+-+11+ ALIGN=MIDDLE  ALT=\"+f+=+46+-+11+\"   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+=+35+ ALIGN=MIDDLE  ALT=\"+f+=+35+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The father is 35 and the son is 11<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+f+-+3+=+4%2A%28+s+-+3+%29+ ALIGN=MIDDLE  ALT=\"+f+-+3+=+4%2A%28+s+-+3+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+35+-+3+=+4%2A%28+11+-+3+%29+ ALIGN=MIDDLE  ALT=\"+35+-+3+=+4%2A%28+11+-+3+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+32+=+4%2A8+ ALIGN=MIDDLE  ALT=\"+32+=+4%2A8+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+32+=+32+ ALIGN=MIDDLE  ALT=\"+32+=+32+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );