document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=834119>Question 834119</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Dad is seven times as old as his son. 10 years later, he will be three times as old as his son. Find their ages. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #502825 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=502825\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"Dad is seven times as old as his son\" ---> D = 7S\r<BR>\n" );
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document.write( "\"10 years later, he will be three times as old as his son\" ---> D+10 = 3(S+10)\r<BR>\n" );
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document.write( "D+10 = 3(S+10)\r<BR>\n" );
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document.write( "7S+10 = 3(S+10)\r<BR>\n" );
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document.write( "7S+10 = 3S+30\r<BR>\n" );
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document.write( "7S = 3S+30-10\r<BR>\n" );
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document.write( "7S-3S = 30-10\r<BR>\n" );
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document.write( "4S = 20\r<BR>\n" );
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document.write( "S = 20/4\r<BR>\n" );
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document.write( "S = 5 <--- The son is 5 years old\r<BR>\n" );
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document.write( "D = 7S\r<BR>\n" );
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document.write( "D = 7*5\r<BR>\n" );
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document.write( "D = 35 <---- The dad is 35 years old. </SPAN>\n" );
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