Rakesh had money to buy 8 mobile handsets of a specific company. But the retailer offered very good discount on that particular handset. Rakesh could buy 10 mobile handsets with the amount he had. What was the discount the retailer offered?
Answer & explanation
Answer: (b) 20%
The same money buys 10 handsets instead of 8, so the new price is 8/10 of the old one — a 20% discount. 25% is the rise in quantity, not the fall in price.
- Let the price be ₹100; Rakesh has 8 × 100 = ₹800.
- ₹800 now buys 10 handsets, so the discounted price = ₹80.
- Discount = (100 − 80)/100 × 100% = 20%.
Remember · With fixed money, price × quantity is constant: quantities 8 : 10 mean prices 10 : 8.
Question and answer: UPSC's official GS Paper II (2019, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·