1:某种衣服因换季打折销售,每件衣服如果按标价的5折出售将亏60元,而如果按标价的8折出售将赚120元.问这件衣服的标价和成本是多少元?
人气:267 ℃ 时间:2019-08-16 22:53:57
解答
标价600元,成本360元.问一下列式成本价为x,售价为y5/10Y=X-608/10Y=X+120
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