document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1203280>Question 1203280</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A father is 51 years old and his son is 19. How many years ago was the father 5 times his son’s age? </SPAN>\n" );
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document.write( "Let x and 5x represent their ages when the father was 5 times as old as his son.  Then the difference in their ages then (and always) is 4x.<br><BR>\n" );
document.write( "Now their ages are 51 and 19, so the difference in their ages is 32. So<br><BR>\n" );
document.write( "4x = 32<BR>\n" );
document.write( "x = 8<br><BR>\n" );
document.write( "Their ages when the father was 5 times as old as his son were x = 8 and 5x = 40.<br><BR>\n" );
document.write( "Since their ages now are 51 and 19, that was 11 years ago.<br><BR>\n" );
document.write( "ANSWER: 11<br><BR>\n" );
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