एक परीक्षा में P ने Q से 40 अंक अधिक प्राप्त किए । यदि Q ने P से 10% कम अंक प्राप्त किए, तो Q ने कितने अंक प्राप्त किए ?
Read this question in English
P scored 40 marks more than Q in an examination. If Q scored 10% less marks than P, then how much did Q score?
(a) 360 · (b) 380 · (c) 400 · (d) 420
उत्तर और व्याख्या · explanation in English
Answer: (a) 360
Q's score is 10% below P's, so the 40-mark gap is 10% of P's score. P scored 400 and Q scored 360.
- Q scored 10% less than P, so the gap of 40 marks is 10% of P's marks.
- P = 40 ÷ 0.10 = 400.
- Q = 400 − 40 = 360.
- Check: 360 is 90% of 400.
Remember · 'x% less than P' means the difference is x% of P — use it to find P first.
Question and answer: UPSC's official GS Paper II (2021, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·