Multiple choice

Ram and Shyam work on a job together for four days and complete 60% of it. Ram takes leaves then for eight days to complete the job. How long would Ram take to complete the entire job alone and Shyam works? राम और श्याम एक साथ एक कार्य को चार दिन के लिए करते हैं और 60% काम पूरा करता है। राम छुट्टी लेता है, और तब श्याम काम को पूरा करने के लिए 8 दिन अधिक लेता है तो राम को अकेले काम करने में कितना समय लगेगा ?

  1. 6 days/ दिन

  2. 8 days/ दिन

  3. 10 days/ दिन

  4. 11 days/ दिन
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ram and Shyam together complete 60% in 4 days, so 100% would take them 4 × (100/60) = 20/3 days together. Let Ram take R days alone, Shyam take S days alone. Their combined rate: 1/R + 1/S = 3/20. Shyam completes remaining 40% alone in 8 days, so 100% takes S = 8 × (100/40) = 20 days. Therefore: 1/R = 3/20 - 1/20 = 2/20 = 1/10, so R = 10 days.

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