Railways PYQCBT 1 2016

RRB NTPC · Question 41

If Rahul walks at 4 km/h, he reaches office late by 10 minutes of the scheduled time. If he walks at 5 km/h he reaches office 5 minutes early of the scheduled time. Calculate the distance of his office from his home. A. 4 km B. 6 km C. 5 km D. 8 km

  1. C

  2. A

  3. B

  4. D

Show answer & explanation

Answer: (A) C

Explanation

The two times differ by 15 minutes: d/4 − d/5 = 1/4 hour, so d/20 = 1/4 and d = 5 km.