SOLUTION: a girl is 4 years older than her brother. 2 years ago the sum of their ages was 20. What is her age now?
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Question 1061521: a girl is 4 years older than her brother. 2 years ago the sum of their ages was 20. What is her age now?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = her age now
= her age 2 years ago
= her brother's age now
= her brother's age 2 years ago
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given:
She is 14 now
----------------------
check answer:
a girl is 4 years older than her brother.
She is 14
He is 10
-----------
2 years ago:
She is 12
He is 8
OK
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