A person buys three articles P, Q and R for ₹ 3,330. If P costs 25% more than R and R costs 20% more than Q, then what is the cost of P?

1. A. ₹ 1,000
2. B. ₹ 1,200
3. C. ₹ 1,250
4. D. ₹ 1,350

Answer: D

Explanation

Let the cost of article Q be 100 units.
Since R costs 20% more than Q, the cost of R = 100 + 20% of 100 = 120 units.
Since P costs 25% more than R, the cost of P = 120 + 25% of 120 = 120 + 30 = 150 units.
So, the ratio of costs P:Q:R is 150:100:120, which simplifies to 15:10:12.
The total cost is ₹3,330. The total units in the ratio are 15 + 10 + 12 = 37 units.
Therefore, 37 units = ₹3,330.
1 unit = 3330 / 37 = ₹90.
The cost of P is 15 units = 15 * 90 = ₹1,350. This question involves percentage calculations and ratio application, a standard topic in CSAT.