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(注:在這裡“/”為分數線and除號;分數中分子在左,分母在右.) 一周後還剩(率):1-1/8*7=1/8 這1/8對應了量為4/5噸,則總量為 (4/5)/(1/8)=6.4(32/5)(噸) 答:這批石子共有6.4噸. 呵呵,加油!有什麼不懂的再問,誠答!
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