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A girl is 21 years old and her brother is a third her age. When the girl is 36, what will be the age of her brother?
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A girl is 21 years old and her brother is a third her age. When the girl is 36, what will be the age of her brother?

User Juv
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if the girl is 21 years old and her brother is a third of her age means he is 7 years old. now his sister is 36 yard old so that means he is 12 years old
User JeCh
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