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Railways PYQCBT 1 2016

RRB NTPC · Question 96

10 people can do a work in 30 days. In how many days, can 15 people complete double the work? A. 20 B. 25 C. 40 D. 45

  1. C

  2. D

  3. B

  4. A

Show answer & explanation

Answer: (A) C

Explanation

10 people × 30 days = 300 person-days for one unit of work, so double the work needs 600 person-days. With 15 people it takes 600 ÷ 15 = 40 days.