document.write( "Question 984634: Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother? \n" ); document.write( "

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Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?
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In 8 years' time, Mary will be , and will be twice her brother's age, then. \n" );
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