document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1148570>Question 1148570</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A father is 5 times as old as his son. In 18 years, the father will be twice<BR>\n" );
document.write( "as old as his son. How old is the father at present?<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 #769901 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=769901\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x be the age of the father's son<BR>\n" );
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document.write( "father's age = 5x<BR>\n" );
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document.write( "5x+18 = 2 * (x+18)<BR>\n" );
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document.write( "5x+18 = 2x+36<BR>\n" );
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document.write( "3x = 18<BR>\n" );
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document.write( "x = 6<BR>\n" );
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document.write( "Father's current age = 5 * 6 = 30 years old<BR>\n" );
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document.write( "check the answer<BR>\n" );
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document.write( "30+18 = 2 * (6+18)<BR>\n" );
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document.write( "48 = 48<BR>\n" );
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document.write( "answer checks </SPAN>\n" );
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