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英语翻译翻译 算式When Maria was born her mother was 24 years old.At

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英语翻译
翻译 算式
When Maria was born her mother was 24 years old.At present Maria’s age is 20% of her mother’s age.How old is Maria now?
英语翻译翻译 算式When Maria was born her mother was 24 years old.At
Maria(玛利亚)出生时,她妈妈24岁,现在Maria年龄是她妈妈年龄的20%(即:1/5).问:Maria现在多少岁?
设Maria现在年龄为a(岁)
a=20%×(a+24)
左右移向、合并得,a=6(岁)