A couple gave birth to their son a year after their marriage , the sum of the ages of that couple was equal to the current age of lady. When their son was born, the mother age was 2 less than the current age of the son. The ratio of the current ages of mother and father is `25/27`. The current age of son is :

Explanation

Let's solve the problem step by step.

### Step 1: Define Variables
Let the current age of the son be \( S \), the current age of the mother be \( M \), and the current age of the father be \( F \).

### Step 2: Set Up Equations
1. From the problem, we know that the couple had their son a year after their marriage. Therefore, the current age of the mother \( M \) is equal to the sum of the ages of the couple when their son was born. This gives us:
\[
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