document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=780214>Question 780214</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, I really need help with this question. I urgently need an answer to this question. I have to use algebra to solve it.<BR>\n" );
document.write( "Thanks\r<BR>\n" );
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document.write( "A man is nine times as old as his son. In nine years, he will be only three times as old as his son. How old are each now?\r<BR>\n" );
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document.write( "Please use the variables:<BR>\n" );
document.write( "F = Age of father<BR>\n" );
document.write( "S = Age of son<BR>\n" );
document.write( "Any other variables can be included if need be.<BR>\n" );
document.write( "Thanks so much! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #475489 by </B><A HREF=/tutors/aboutme.mpl?userid=MathTherapy><B>MathTherapy(10552)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathTherapy><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=MathTherapy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=475489\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "Hi, I really need help with this question. I urgently need an answer to this question. I have to use algebra to solve it.<BR>\n" );
document.write( "Thanks\r<BR>\n" );
document.write( "\n" );
document.write( "A man is nine times as old as his son. In nine years, he will be only three times as old as his son. How old are each now?\r<BR>\n" );
document.write( "\n" );
document.write( "Please use the variables:<BR>\n" );
document.write( "F = Age of father<BR>\n" );
document.write( "S = Age of son<BR>\n" );
document.write( "Any other variables can be included if need be.<BR>\n" );
document.write( "Thanks so much!\r<BR>\n" );
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document.write( "Let age of father, and son be F and S, respectively\r<BR>\n" );
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document.write( "Then: F = 9S ---- eq (i)\r<BR>\n" );
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document.write( "In 9 years, father's age then = F + 9, and son's will be S + 9\r<BR>\n" );
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document.write( "Since in 9 years he (father) will be only be three times as old as his son, then we can say that: F + 9 = 3(S + 9)\r<BR>\n" );
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document.write( "F + 9 = 3S + 27 ----- F - 3S = 18 ------ eq (ii)\r<BR>\n" );
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document.write( "9S - 3S = 18 ------- Substituting 9S for F in eq (ii)\r<BR>\n" );
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document.write( "6S = 18\r<BR>\n" );
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document.write( "S, or son's current age = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18%2F6 ALIGN=MIDDLE  ALT=\"18%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%283%29 ALIGN=MIDDLE  ALT=\"highlight_green%283%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "F = 9(3) ------ Substituting 3 for S in eq (i)\r<BR>\n" );
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document.write( "F, or father's current age = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%2827%29 ALIGN=MIDDLE  ALT=\"highlight_green%2827%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "You can do the check!! \r<BR>\n" );
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document.write( "Further help is available, online or in-person, for a fee, obviously. Send comments, “thank-yous,” and inquiries to “D” at MathMadEzy@aol.com </SPAN>\n" );
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