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Railways PYQCBT 2 2017

RRB NTPC · Question 85

If the mean height of 12 men is 1.70 m and the mean height of 8 women is 1.60 m, then the total height of 8 women in meters is:

  1. 12.9

  2. 12.8

  3. 12.4

  4. 13

Show answer & explanation

Answer: (B) 12.8

Explanation

Total height of the 8 women = mean × number = 1.60 × 8 = 12.8 m (the men's data is not needed).