SOLUTION: Lisa is 3 years younger than Carrie. The sum of Lisa and Carrie's ages is 87. How old is Lisa?

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Question 1173523: Lisa is 3 years younger than Carrie. The sum of Lisa and Carrie's ages is 87. How old is Lisa?
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
Lisa is Carrie-3, or Carrie is Lisa+3. Second alternative is easier for the question, "how old is Lisa?"

Carrie, L+3
Lisa, L

.
.

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