document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=392630>Question 392630</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this question:\r<BR>\n" );
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document.write( "\"A father is four times as old as his son. In four years' time their combined age will be 48 years. How old are they now?\" </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #278666 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=278666\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A father is four times as old as his son. In four years' time their combined age will be 48 years. How old are they now?\"<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "f = 4s<BR>\n" );
document.write( "(f+4)+(s+4) = 48<BR>\n" );
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document.write( "Substitute for \"f\" and solve for \"s\":<BR>\n" );
document.write( "(4s+4)+(s+4) = 48<BR>\n" );
document.write( "5s+8 = 48<BR>\n" );
document.write( "5s = 40<BR>\n" );
document.write( "s = 8 yrs old (son's age now)<BR>\n" );
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document.write( "Solve for \"f\":<BR>\n" );
document.write( "f = 4s<BR>\n" );
document.write( "f = 4*8 = 32 yrs old (father's age now)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "========= </SPAN>\n" );
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