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Railways PYQCBT 2 2017

RRB NTPC · Question 59

15 men can do a work in 20 days. How many days will 10 men take to do double the same work?

  1. 40

  2. 60

  3. 50

  4. 30

Show answer & explanation

Answer: (B) 60

Explanation

The work = 15 × 20 = 300 man-days; double the work = 600. With 10 men it takes 60 days.