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Railways PYQCBT 2 2017

RRB NTPC · Question 5

If Lalitha leaves home and drives to her school at a speed of 45 kmph, she reaches 5 minutes later than when she drives at 60kmph speed. Find the distance to her school (in km).

  1. 18

  2. 15

  3. 14

  4. 10

Show answer & explanation

Answer: (B) 15

Explanation

d/45 − d/60 = 5 minutes = 1/12 hour. d(4 − 3)/180 = 1/12, so d = 15 km.