Sara’s mother is three times as old as Sara and four times as old as Sara’s sister, Ann is three years younger than Sara. How old are Sara, Ann and their mother?

Explanation

To solve the problem step by step, we will define the variables and set up equations based on the information given in the question.

### Step 1: Define the Variables
Let:
- \( x \) = Sara's age
- \( y \) = Ann's age
- \( m \) = Sara's mother's age

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