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Railways PYQCBT 1 2016

RRB NTPC · Question 5

The distance between two points A and B is covered in 5 ½ hours at a speed of 50 km/hr. If the speed is increased by 5 km/hr, how much time would be saved? A. 5 minutes B. 15 minutes C. 50 minutes D. 30 minutes

  1. A

  2. D

  3. B

  4. C

Show answer & explanation

Answer: (B) D

Explanation

Distance = 50 km/h × 5½ h = 275 km. At 55 km/h the time is 275/55 = 5 hours. Time saved = 5½ − 5 = ½ hour = 30 minutes.