document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=644382>Question 644382</A>: <I><SPAN STYLE=\"word-break: break-all;\"> susan's father is 3 years more than twice as old as susan.yhe product of their ages in years is 560.how old is susan?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #405006 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=405006\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let f = father's age and s = susan's age\r<BR>\n" );
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document.write( "f = 2s + 3\r<BR>\n" );
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document.write( "f*s = 560\r<BR>\n" );
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document.write( "(2s + 3)*s = 560\r<BR>\n" );
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document.write( "s(2s + 3) = 560\r<BR>\n" );
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document.write( "2s^2 + 3s = 560\r<BR>\n" );
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document.write( "2s^2 + 3s - 560 = 0\r<BR>\n" );
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document.write( "(2s+35)(s-16) = 0\r<BR>\n" );
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document.write( "2s+35 = 0 or s-16 = 0\r<BR>\n" );
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document.write( "2s = -35 or s = 16\r<BR>\n" );
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document.write( "s = -35/2 or s = 16\r<BR>\n" );
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document.write( "s = -17.5 or s = 16\r<BR>\n" );
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document.write( "Toss the negative solution to get the only solution: s = 16\r<BR>\n" );
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document.write( "So Susan is 16 years old.\r<BR>\n" );
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document.write( "f = 2s + 3\r<BR>\n" );
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document.write( "f = 2(16) + 3\r<BR>\n" );
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document.write( "f = 32 + 3\r<BR>\n" );
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document.write( "f = 35\r<BR>\n" );
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document.write( "and her father is 35 years old\r<BR>\n" );
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