राम और श्याम किसी कार्य को करने के लिए चार दिन एक साथ काम करते हैं और 60% कार्य पूरा करते हैं। तब राम छुट्टी पर चला जाता है और श्याम काम को पूरा करने में आठ दिन और लगाता है। राम को अकेले कार्य पूरा करने में कितने दिन लगते ?
Read this question in English
Ram and Shyam work on a job together for four days and complete 60% of it. Ram takes leave then and Shyam works for eight more days to complete the job. How long would Ram take to complete the entire job alone?
(a) 6 days · (b) 8 days · (c) 10 days · (d) 11 days
उत्तर और व्याख्या · explanation in English
Answer: (c) 10 दिन
Together they do 60% in 4 days, i.e. 15% a day. Shyam alone does the other 40% in 8 days, i.e. 5% a day. So Ram does 10% a day and would need 10 days alone.
- Together: 60% in 4 days = 15% a day.
- Shyam alone: 40% in 8 days = 5% a day.
- Ram = 15% − 5% = 10% a day, so 100 ÷ 10 = 10 days.
Remember · Turn work into per-day percentages; rates simply add when people work together.
Question and answer: UPSC's official GS Paper II (2016, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·