Multiple choice

12 men can complete a work within 9 days. After 3 days they started the work, 6 men joined them to replace 2 men. How many days will they take to complete the remaining work? 12 आदमी एक कार्य को 9 दिनों में पूरा कर सकते हैं | कार्य शुरू करने के 3 दिन बाद, 6 आदमी 2 आदमी के स्थान पर शामिल हो जाते हैं | शेष कार्य को पूरा करने के लिए वे कितने दिन लेंगें ?

  1. 2

  2. 3

  3. 4

  4. 4.5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Total work = 12 × 9 = 108 man-days. Work done in first 3 days = 12 × 3 = 36 man-days. Remaining work = 108 - 36 = 72 man-days. New workforce = 12 - 2 + 6 = 16 men. Days needed = 72 / 16 = 4.5 days.

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