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There are 60000 people in a town.70% of the population are adults.If 2000 babies were born and 2000 adults died,what is the mew percentage of adults in the town?
题目详情
There are 60000 people in a town.70% of the population are adults.
If 2000 babies were born and 2000 adults died,what is the mew percentage of adults in the town?
If 2000 babies were born and 2000 adults died,what is the mew percentage of adults in the town?
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答案和解析
这个是数学题么.
一个镇有60000人,70%是成年人.如果有2000个婴儿出生,2000个成年人去世,那么镇上成年人的比例是多少?
原有成年人：60000×70%=42000
现有成年人：42000-2000=40000
现在的总人口：60000-2000（去世的成年人）+2000（出生的婴儿）=60000
现在成年人的比例：40000/60000=2/3
一个镇有60000人,70%是成年人.如果有2000个婴儿出生,2000个成年人去世,那么镇上成年人的比例是多少?
原有成年人：60000×70%=42000
现有成年人：42000-2000=40000
现在的总人口：60000-2000（去世的成年人）+2000（出生的婴儿）=60000
现在成年人的比例：40000/60000=2/3
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