1/5吨棉花可以换3/4吨粮食,5/6吨棉花可以换1吨钢材,1吨粮食可以换（ ）吨钢材
1/5吨棉花可以换3/4吨粮食,5/6吨棉花可以换1吨钢材,1吨粮食可以换（ ）吨钢材
数学人气：689 ℃时间：2019-11-13 04:50:37
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l÷3/4×5/6＝5/4(T)
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