Multiple choice general knowledge math & puzzles

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?

  1. 120metres

  2. 180metres

  3. 324metres

  4. 150metres

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

Speed = 60 km/hr = 60 * (5/18) m/sec = 50/3 m/sec. Length of the train = Speed * Time = (50/3) * 9 = 150 metres. The other options result from failing to convert km/hr to m/sec or using incorrect time factors.