SOLUTION: Jan and her sister have a cdombined age of 18 years. Jan is 2 years older than her sister. How old is Jan?

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Question 448183: Jan and her sister have a cdombined age of 18 years. Jan is 2 years older than her sister. How old is Jan?
Answer by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!
j+s=18
j=2+s
2+s+s=18
2s=16
s=8
j=10