Question

A train $110$ m long passes a man, running at $6$ kmph in the direction opposite to that of the train, in $6$ seconds.The speed of the train is ___________

• A. $54$ km/hr
• B. $60$ km/hr
• C. $66$ km/hr
• D. $72$ km/hr

Answer 1

Answer: (B)

$60$ km/hr

Speed of the man relative to man$=\frac{110}{6}m/sec$
$=(\frac{110}{6}\times \frac{18}{5})km/hr$
$=66km/hr$
Let speed of the train is $x$ km/ hr
$=x+6=66$
$x=60km/hr$