How long (in seconds) will a train of a length 320 m, running at a speed of 67 km/h, take to cross a man moving in opposite direction at a speed of 5 km/hr?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 16.
Relative speed = 67 + 5 = 72 km/h = (72 × 1000)/3600 = 20 m/s
Time = 320 ÷ 20 = 16 seconds