设每一份为x吨,则甲卡车运货6x吨,乙卡车运货7x吨,丙卡车运货4.5x吨,三辆卡车共运货(6x+7x+4.5x)吨,由题意,得
6x-4.5x=12,
解得:x=8,
三辆卡车共运货(6+7+4.5)×8=17.5×8=140吨.
故答案为:140
甲、乙、丙三辆卡车所运货物的吨数比是6:7:4.5,已知甲车比丙车多运货物12吨,则三辆卡车共运货物_吨.
甲、乙、丙三辆卡车所运货物的吨数比是6:7:4.5,已知甲车比丙车多运货物12吨,则三辆卡车共运货物______吨.
数学人气:198 ℃时间:2019-08-21 16:12:23
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