document.write( "Question 1003790: The mean age of a group of eight girls was 15. One more girl joins the group and the mean age became 14. How old is the ninth girl? \n" ); document.write( "
Algebra.Com's Answer #620427 by harpazo(655)\"\" \"About 
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14X9-15X8 = 126-120 = 6 years \n" ); document.write( "
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