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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?

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?

asked
User Max Markson
by
7.2k points

2 Answers

5 votes
a third of 21=21/3=7

in how many years
36-21=15

in 15 years
7+15=22

age is 22
answered
User Andreas Violaris
by
7.8k points
5 votes
21 divided by 3 = 7

That means the brother is 14 years younger.

36 - 14 = 22

The brother will be 22 years old.
answered
User Tarrball
by
8.6k points
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