town t has 20000 residents,60 percent of whom are female. what percent of th residents were born in town t? 1,the number of femals residents who were born in town t is twice the number of male resiedents who were not born in town t. 2,the number of female resedents who were not born in town t is twice the number of female residents who were born in town t.
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发表于 2010-2-21 15:07:21
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