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Railways PYQCBT 1 2016

RRB NTPC · Question 20

Cars X and Y start at the same time with speeds of 12 kmph and 16 kmph. Find the distance between them after 3-minutes.(car moving in the same direction.) A. 200 m B. 150 m C. 180 m D. 120 m

  1. B

  2. C

  3. A

  4. D

Show answer & explanation

Answer: (C) A

Explanation

Moving in the same direction, the gap grows at 16 − 12 = 4 km/h. In 3 minutes (3/60 hour) the gap = 4 × 3/60 = 0.2 km = 200 m.