80-42.4=37.6(汽油的一半)
37.6×2=75.2(汽油的重量)(千克)
75.2×2.9=218.08(元)
每千克汽油的价钱2.90元,1桶汽油连桶重80千克,买出汽油的1半,连桶重42.4千克,这桶汽油一共能卖多少钱
每千克汽油的价钱2.90元,1桶汽油连桶重80千克,买出汽油的1半,连桶重42.4千克,这桶汽油一共能卖多少钱
数学人气:880 ℃时间:2019-09-29 03:57:51
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