Multiple choice

A, 150 meter long train cross a tunnel 100 meter long in 15 second. Find the speed of train in km/hr.

  1. 45 km/hr.

  2. 48 km/hr.

  3. 60 km/hr.

  4. 72 km/hr.

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

Total distance to cross the tunnel = train length + tunnel length = 150 + 100 = 250 meters. Time taken = 15 seconds. Speed = 250/15 = 50/3 m/s. Converting to km/hr: (50/3) × (18/5) = 60 km/hr. Options A (45) and B (48) underestimate the speed, while D (72) overestimates it.