服装厂一车间一天做服装80套,共用布168米.每件上衣用布1.2米,每条库子用布多少米
题目
服装厂一车间一天做服装80套,共用布168米.每件上衣用布1.2米,每条库子用布多少米
答案
80×1.2+80×X=168
80×1.2=96
168-96=72
72÷80=0.9
裤子 用0.9米
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