SOLUTION: Aunt karen is eight years younger thank twice the age of Mary. Their ages add up to twenty-eight. Find the age of Aunt Karen and Mary.

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Question 378447: Aunt karen is eight years younger thank twice the age of Mary. Their ages add up to twenty-eight. Find the age of Aunt Karen and Mary.
Answer by sophxmai(62) About Me  (Show Source):
You can put this solution on YOUR website!
Let k stand for Karen's age, and m stand for Mary's age.
2m-8=k
k+m=28

Substitute k for k=2m-8
(2m-8)+m=28
3m-8=28
3m=36
m=12

Substitute m for m=12
k+m=28
k+(12)=28
k=16

Karen is 16 years old, Mary is 12 years old.