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58问答库 > 五六年级的人数比是7:5如果从五年级调130人到六年级则两个年级的人数比是3:4五六年级各有多少人

五六年级的人数比是7:5如果从五年级调130人到六年级则两个年级的人数比是3:4五六年级各有多少人

2025-04-05 09:00:28

推荐回答（2个）

回答（1）：

假设六年级有x人，则五年级有0.65x x+0.65x=330 1.65x=330 x=200 330-200=130人所以五年级有130人，六年级有200人.

回答（2）：

130/(7/5-3/4)
130*20/13
200
200/5*7
280

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