每辆大车每天运全部的:1/(8*3)=1/24
每辆小车每天运全部的:(3/4)/(5*8)=3/160
3辆大车,4辆小车每天可以运:
1/24*3+3/160*4=1/5
运完需要:1/(1/5)=5天
运一批鸡蛋,用8辆大车3天运完,用5辆小车8天运完全部物资的3/4,现用3辆大车,4辆小车装运,几天可以运完
运一批鸡蛋,用8辆大车3天运完,用5辆小车8天运完全部物资的3/4,现用3辆大车,4辆小车装运,几天可以运完
数学人气:247 ℃时间:2020-05-24 17:19:46
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