Let the cost of article Q be ₹ $x$.

1. Since R costs 20% more than Q:

   • Cost of R = $x + 0.2x = 1.2x$

2. P costs 25% more than R:

   • Cost of P = $1.2x + 0.25(1.2x) = 1.5x$

3. Total cost of P, Q, and R is ₹ 3,330:

   • $x + 1.2x + 1.5x = 3330$
   • $3.7x = 3330$
   • $x = \frac{3330}{3.7} = 900$

4. Cost of P = $1.5 \times 900$ = ₹ 1,350.

Answer: D. ₹ 1,350