Explanation

Let current ages be:

• Ahsan = $A$

• Shakeel = $S$
  

Condition 1 (Five years ago):

$$A-5=7(S-5)\text{(Equation 1)}$$

Condition 2 (Three years later):

$$A + 3 = 3(S + 3) quad text{(Equation 2)}$$

Solving the equations:

From Equation 1:

$$A - 5 = 7S - 35 Rightarrow A = 7S - 30 quad text{(Equation 3)}$$

Substitute into Equation 2:

$$(7S - 30) + 3 = 3(S + 3) Rightarrow 7S - 27 = 3S + 9 Rightarrow 7S - 3S = 9 + 27 Rightarrow 4S = 36 Rightarrow S = 9$$

Now, plug back to find Ahsan's age:

$$$$A = 7S - 30 = 7(9) - 30 = 63 - 30 = 33