乙队原有人数是甲队的3/7
- 时间:2020-05-31 15:09:42
- 分类:数学世界
- 阅读:176 次
乙队原有人数是甲队的3/7。现在从甲队派10人到乙队,则乙队人数是甲队人数的2/3。甲、乙两队原来各有多少人?
数学题解答:根据“乙队原有人数是甲队的3/7”可以知道,乙队原有人数可看成3份,甲队原有人数可看成7份,两队总人数是10份;甲队派10人到乙队后,乙队人数占甲队的2/3,可以根据分数基本性质变为4/6,此时总份数也是10份。所以乙队从3份变成4份,说明10人正好相当于1份,所以总人数就是:10×10=100(人)。乙队原有人数是:10×3=30(人),甲队原有人数是:10×7=70(人)。
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