Multiple choice

A train 110 m long passes a man, running at 6 kmph in the direction opposite to that of the train, in 6 seconds. The speed of the train is

  1. 54 kmph

  2. 60 kmph

  3. 66 kmph

  4. 72 kmph

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sped of the train relative to man = ( 110/6) m/sec = ( 110/6 ´ 18/5 ) kmph = 66 kmph Let the speed of the train be x kmph . Then relative speed = ( x + 6) kmph
x + 6 = 66, x = 60 kmph