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Railways PYQCBT 1 2016

RRB NTPC · Question 62

A train runs at 80 kmph for the first 40 km and the next 30 km at 60 kmph. Find the average speed. A. 62 kmph B. 64 kmph C. 65 kmph D. 70 kmph

  1. A

  2. B

  3. D

  4. C

Show answer & explanation

Answer: (C) D

Explanation

Time = 40/80 + 30/60 = 0.5 + 0.5 = 1 hour for 70 km. Average speed = 70/1 = 70 km/h.