甲乙两个粮仓,原来乙仓比甲仓少存粮1/5,现在把甲仓存量的1/4放进乙仓,再从乙仓中运出30吨,这时两仓存粮相

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  • +----+----+----+----+----+ 1

    +----+----+----+----+ 1-1/5

    +----+----+----+--- 1-1/4

    +----+----+----+----+----+- 1-1/5+1/4

    | 30吨 |

    甲:

    30÷[(1-1/5+1/4)-(1-1/4)]

    =30÷(1/2-1/5)

    =100

    乙:100X(1-1/5)=80