Father’s age is three times the sum of ages of his two children. After 5 years his age will be twice the sum of ages of two children. Find the age of father.

Explanation

To find the age of the father based on the given conditions, we will use the method of forming and solving linear equations.

### Step-by-Step Solution:

1. **Define Variables:**
- Let \( x \) be the father's current age.
- Let \( y \) be the sum of the current ages of his two children.

...