document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1042959>Question 1042959</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 5 years ago a man was 7 times as old as his son. 5 years hence , the father will be three times as old as his son. Find their present ages. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #658029 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=658029\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5 years ago a man was 7 times as old as his son. 5 years hence , the father will be three times as old as his son. Find their present ages. <BR>\n" );
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document.write( "f-5 = 7(s-5)<BR>\n" );
document.write( "f+5 = 3(s+5)<BR>\n" );
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document.write( "Simplify::<BR>\n" );
document.write( "f - 7s = -30<BR>\n" );
document.write( "f - 3s = 10<BR>\n" );
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document.write( "Subtract and solve for \"s\":<BR>\n" );
document.write( "4s = 40<BR>\n" );
document.write( "son's age = 10 yrs<BR>\n" );
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document.write( "Solve for \"f\":<BR>\n" );
document.write( "f - 5 = 7(s-5)<BR>\n" );
document.write( "f - 5 = 7(10-5)<BR>\n" );
document.write( "f = 7*5+5 = 40 years (father's age)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );