這個(gè)是數(shù)學(xué)題么.
一個(gè)鎮(zhèn)有60000人,70%是成年人.如果有2000個(gè)嬰兒出生,2000個(gè)成年人去世,那么鎮(zhèn)上成年人的比例是多少?
原有成年人：60000×70%=42000
現(xiàn)有成年人：42000-2000=40000
現(xiàn)在的總?cè)丝冢?0000-2000（去世的成年人）+2000（出生的嬰兒）=60000
現(xiàn)在成年人的比例：40000/60000=2/3
There are 60000 people in a town.70% of the population are adults.
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?
英語(yǔ)人氣：651 ℃時(shí)間：2020-05-13 08:37:51
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