SOLUTION: A girl is three years older than her brother. If their combined age is 35 years, how old is each?
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Question 991678: A girl is three years older than her brother. If their combined age is 35 years, how old is each?
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
let's girl's age be and boy's age
if a girl is years older than her brother, then we know that
.......eq.1
if their combined age is years, we know that
........eq.2...substitute for
=> boy's age
=>=>=>girl's age
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