document.write( "Question 1059463: The sum of the ages of Mark's two sons is equal to his own age of 51.
\n" ); document.write( "21 years ago, Mark's older son was twice as old as the younger son.
\n" ); document.write( "How old was Mark when the sum of his sons' ages was half his age? \n" ); document.write( "

Algebra.Com's Answer #674555 by MathTherapy(10552) $\"\"$ $\"About$

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The sum of the ages of Mark's two sons is equal to his own age of 51.
\n" ); document.write( "21 years ago, Mark's older son was twice as old as the younger son.
\n" ); document.write( "How old was Mark when the sum of his sons' ages was half his age?
\n" ); document.write( "

Mark was:  when he was twice the sum of his sons' ages.
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document.write( "DON'T let anyone tell you otherwise! \n" );
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