(1-2×1/10)÷1/8
=4/5×8
=6.4天
一項(xiàng)工程,甲隊(duì)單獨(dú)完成需10天,乙隊(duì)單獨(dú)完成需要8天,甲隊(duì)先干2天后被調(diào)走,由乙隊(duì)完成,還需要幾天能
一項(xiàng)工程,甲隊(duì)單獨(dú)完成需10天,乙隊(duì)單獨(dú)完成需要8天,甲隊(duì)先干2天后被調(diào)走,由乙隊(duì)完成,還需要幾天能
完成任務(wù)
完成任務(wù)
數(shù)學(xué)人氣：288 ℃時(shí)間：2019-10-23 04:22:25
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