Multiple choice

12 men complete a work in 18 days. Six days after they had started working 4 men joined them. How many days will all of them take to complete the remaining work ? 12 आदमी एक काम को 18 दिनों में पूरा करते हैं | छः दिनों के बाद वे काम शुरू करते है और 4 आदमी जुड़ जाते है तो शेष काम को पूरा करने में कितना दिन लगेगा ?

  1. 10 days/दिन

  2. 12 days/दिन

  3. 15 days/दिन

  4. 09 days/दिन
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Total work = 12 × 18 = 216 man-days. In 6 days, 12 men complete 12 × 6 = 72 man-days. Remaining work = 216 - 72 = 144 man-days. Now 12 + 4 = 16 men work on it. Days needed = 144/16 = 9 days. Option C (15) would be correct if 4 men left instead of joined.

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