Two years ago, Salim was thrice as old as his daughter and six years later, he will be four year older than twice her age. How old are they now?

Explanation

To solve the problem, we will define the present ages of Salim and his daughter using algebraic expressions and then set up equations based on the information provided in the question.

### Step-by-step Solution:

1. **Define Variables:**
Let Salim's present age be \( x \) years and his daughter's present age be \( y \) years.

2. **Set Up the First Equation (Two Years Ago):**
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