document.write( "Question 1175716: Hi
\n" ); document.write( "Mr Lee is 3 times as old as his son. Their total age is 56. How old was Mr Lee when he was 5 times as old as his son.\r
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Algebra.Com's Answer #801376 by ikleyn(52860)\"\" \"About 
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document.write( "From the condition, it is easy to get it mentally, that \r\n" );
document.write( "their current age is 14 years and 42 years.\r\n" );
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document.write( "Or, formally,  x + 3x = 56  implies the same.\r\n" );
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document.write( "Next, considering divisibility by 5, only the age of 35 does suit for the father.\r\n" );
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document.write( "ANSWER.  It happened 7 years ago.\r\n" );
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