A train is 100 meter long and is running at the speed of 30 km per hour. Find the time it will take to pass a man standing at a crossing. Choose the correct choice from the following answers:
A) 10 seconds
B) 12 seconds
C) 14 seconds
D) 16 seconds
E) none of these

Rationale: explanation : as we need to get answer in seconds , so never forget to convert speed into meter per second . speed = 30 km / hr = 30 * 5 / 18 m / sec = 25 / 3 m / sec distance = length of train = 100 meter required time = distancespeed = 100253 = 100 ∗ 325 = 12 sec answer : b
Answer: B