The ratio of girls to boys in a class is 2:5.There are 8 gir
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The ratio of girls to boys in a class is 2:5.There are 8 girls.
How many new girls must join the class so that there will be equal number of boys and girls?给个翻译和答案.
How many new girls must join the class so that there will be equal number of boys and girls?给个翻译和答案.
一个班上女生和男生的比例是2:5,已知女生的个数是8,那么这个班上还要加进去几个新来的女生,才能保证男女生人数一样?
因为女:男=2/5
8/男=2/5
所以男=20人
所以,男-女=20-8=12人
答:还需要进入12个女生,才能使得男女生个数相等
还望采纳O(∩_∩)O哈!
因为女:男=2/5
8/男=2/5
所以男=20人
所以,男-女=20-8=12人
答:还需要进入12个女生,才能使得男女生个数相等
还望采纳O(∩_∩)O哈!
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