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?
Answer & explanation
Answer: (d) ₹1,350
Take Q’s cost as 100: R costs 120 and P costs 150, a total of 370 units. As 370 units = ₹3,330, one unit = ₹9, so P costs 150 × 9 = ₹1,350.
- Let Q = 100. R is 20% more: 120. P is 25% more than R: 150.
- Total = 100 + 120 + 150 = 370 units = ₹3,330, so 1 unit = ₹9.
- P = 150 × 9 = ₹1,350.
- Check: Q = ₹900, R = ₹1,080, P = ₹1,350, and 900 + 1,080 + 1,350 = 3,330.
Remember · Chain the percentages from the cheapest item taken as 100, then scale to the given total.
Question and answer: UPSC's official GS Paper II (2024, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·