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Railways PYQCBT 1 2016

RRB NTPC · Question 56

30 men working 5 hours a day can do a task in 16 days. In how many days will 40 men working 6 hours a day do the same task? A. 12 days B. 10 days C. 15 days D. 18 days

  1. C

  2. B

  3. A

  4. D

Show answer & explanation

Answer: (B) B

Explanation

Total work = 30 men × 5 h × 16 days = 2,400 man-hours. With 40 men working 6 h a day, the days needed = 2400/(40 × 6) = 10 days.