document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=722118>Question 722118</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the sum of father and his son's age is 36 years. when the son becomes as old as his father now, the sum of their ages will be 84 years. find their present years. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #442636 by </B><A HREF=/tutors/aboutme.mpl?userid=MithrilKnights><B>MithrilKnights(8)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MithrilKnights><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=MithrilKnights><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=442636\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Make eqautions, let the age of father be f\r<BR>\n" );
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document.write( "Let the age of son be s\r<BR>\n" );
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document.write( "f+s = 36\r<BR>\n" );
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document.write( "So, f + f-s+f = 84\r<BR>\n" );
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document.write( "We get 3f - s = 84\r<BR>\n" );
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document.write( "Adding the two equations we get\r<BR>\n" );
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document.write( "120 = 4f\r<BR>\n" );
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document.write( "So, the age of the father is 30.\r<BR>\n" );
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document.write( "The age of the child is 6.  </SPAN>\n" );
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