document.write( "Question 138450: On Diane's fifteenth birthday, her father was three times as old as she was then. In years, what will Diane's age be when her father is twice as old as she is? \n" ); document.write( "
Algebra.Com's Answer #116433 by mlhuff12(3)\"\" \"About 
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Diane is 15. Her father is 45...There is a 30 year difference.
\n" ); document.write( "When Diane is 30 her father will be 15 years older. He will be 60.
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\n" ); document.write( "Diane will be 30 when her father is twice as old as her.
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