Quantitative Aptitude Ques 2344

Question: A 222 m long train crosses a pole in 6 s. The same train crosses a man running in the same direction in 10 s. What will be the speed of man? [LIC (AAO) 2013]

Options:

A) 15 m/s

B) 17 m/s

C) 18 m/s

D) 14 m/s

E) None of these

Show Answer

Answer:

Correct Answer: A

Solution:

  • Speed of train $ =\frac{222}{6}=37,m/s $ If the speed of man be x m/s. Then, $ \frac{222}{37-x}=10 $

$ \Rightarrow $ $ 222=370-10x $

$ \Rightarrow $ $ -148=-10x\Rightarrow x=14.8m/s $

$ \therefore $ $ x\approx 15,m/s $