Quantitative Aptitude Ques 839

Question: How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/ h in the direction of moving train, if the speed of the train is 63 km/h?

Options:

A) 25

B) 30

C) 40

D) 45

Show Answer

Answer:

Correct Answer: B

Solution:

  • Speed of train relative to man $ =(63-3)km/h $ $ =60km/h=\frac{60\times 5}{18}m/s $ $ =\frac{50}{3}m/s $

$ \therefore $ Time taken to pass the man $ =500\times \frac{3}{50}=30s $