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【正确答案】:(1)净资产收益率=500/[(3500+4000)/2]×100%=13.33%
总资产净利率=500/[(8000+10000)/2]×100%=5.56%
销售净利率=500/20000×100%=2.5%
(2)总资产周转率=20000/[(8000+10000)/2]=2.22(次)
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