SOLUTION: Mary is thrice as old as her sister Karen. The sum of their ages is 52 years. What are their ages?

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Question 1174130: Mary is thrice as old as her sister Karen. The sum of their ages is 52 years.
What are their ages?
Answer by ikleyn(52797) About Me  (Show Source):
You can put this solution on YOUR website!
.

    3x + x = 52.


You do the rest.