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 #761049 by ikleyn(52803)\"\" \"About 
You can put this solution on YOUR website!
.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "You are 20 years younger than your dad, and he is twice as old as you - hence, you are 20 years old now.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );