SOLUTION: Sam is 6 yrs older than his sister Natalie. The sum of their age is 30 yrs. What is Natalie age?

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Question 727105:
Sam is 6 yrs older than his sister Natalie. The sum of their age is 30 yrs. What is Natalie age?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
S=N+6
S+N=30
(N+6)+N=30
2N=30-6
2N=24
N=24/2
N=12 YEARS OLD FOR NATALIE.
S=12+6=18 YEARS OLD FOR SAM.
PROOF:
12+18=30
30=30