document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=943738>Question 943738</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The present age of a father is four times that of his son, in five years the father's age will be three times that of his son.find the present ages of son and father by simultaneous equation </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #575402 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=575402\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The present age of a father is four times that of his son, in five years the father's age will be three times that of his son.find the present ages of son and father by simultaneous equation<BR>\n" );
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document.write( "f = 4s<BR>\n" );
document.write( "f+5 = 3(s+5)<BR>\n" );
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document.write( "Substitute for \"f\" and solve for \"s\"::<BR>\n" );
document.write( "4s+5 = 3s+15<BR>\n" );
document.write( "s = 10 (son's age now)<BR>\n" );
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document.write( "f = 4s = 40 (father's age now)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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