document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=994670>Question 994670</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ten years ago a father was six time as old as his son. After 10 years, he will be twice as old as his son. determine 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 #613698 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=613698\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  ten years ago a father was six time as old as his son. After 10 years, he will be twice as old as his son. determine their present ages. <BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "f-10 = 6(s-10)<BR>\n" );
document.write( "f+10 = 2(s+10)<BR>\n" );
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document.write( "Rearrange::<BR>\n" );
document.write( "f - 6s = -50<BR>\n" );
document.write( "f - 2s = 10<BR>\n" );
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document.write( "Subtract and solve for \"s\"::<BR>\n" );
document.write( "4s = 40<BR>\n" );
document.write( "s = 10 yrs (son's age now)<BR>\n" );
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document.write( "Solve for \"f\":<BR>\n" );
document.write( "f - 2s = 10<BR>\n" );
document.write( "f-20 = 10<BR>\n" );
document.write( "f = 30 yrs (father's age now)<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "---------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );