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Railways PYQCBT 2 2017

RRB NTPC · Question 42

18 men built a ship model in 7 days. How many days will it take for 15 men to make that model?

  1. 8.7 days

  2. 8.5 days

  3. 8.4 days

  4. \(\frac{43}{5}\) days

Show answer & explanation

Answer: (C) 8.4 days

Explanation

The work is 18 × 7 = 126 man-days. With 15 men it takes 126/15 = 8.4 days.