document.write( "Question 1140521: When my dad was 29 years old, I was just 9 years old. Now his age is twice as old as my age. What is my present age? \n" ); document.write( "
Algebra.Com's Answer #761048 by josgarithmetic(39620)\"\" \"About 
You can put this solution on YOUR website!
Age difference is 20 years.\r
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\n" ); document.write( "\n" ); document.write( "Dad x+20
\n" ); document.write( "Son x
\n" ); document.write( "\"x%2B20=2x\"
\n" ); document.write( "\"highlight%28x=20%29\"
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