Question

An express train $110m$ long is travelling at $60km/hr$. In what time will it overtake a man, travelling in the opposite direction to that of the express train at $6km/hr$?

• A. $9\sec$
• B. $8\sec$
• C. $7\sec$
• D. $6\sec$

Answer 1

Answer: (D)

$6\sec$

Distance$=110m$

Relative speed$=60+6$

$=66kmph$ (Since both the train and the man are in moving in opposite direction)

$=\frac{66\times 5}{18}m/\sec$

$=\frac{55}{3}m/\sec$

$\therefore$ Time taken to pass the man $=\left(110\times 3/55\right)=6sec$

Hence,

Option $D$ is correct answer