Multiple choice

Two trains are running with speed 30 km/hr. and 58 km/hr. in the same directions. A man in the slower train passes by the faster train in 18 seconds. The length (in metres) of the faster train is:

  1. 120

  2. 130

  3. 140

  4. 125

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Relative speed when trains move in same direction = 58-30=28 km/hr = 28×(5/18)=70/9 m/s. In 18 seconds, the distance covered (length of faster train) = (70/9)×18=140 meters. The man in the slower train observes the faster train passing by completely.

Keep practicing — related questions