一件上衣打八五折出售,便宜了42元,衣服折后多少元?
一件上衣打八五折出售,便宜了42元,衣服折后多少元?
其他人气：199 ℃时间：2019-10-19 15:27:29
优质解答
原价280元,折后238元.设原价X元,0.15X=42,X=280,再用280*0.85=238元
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