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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03-02-2017
Mathematics

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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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Аноним Аноним · Answer 1 · 2017-02-12T07:21:23+01:00

Аноним Аноним

12-02-2017

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

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