A.  45 km/hr

B.  50 km/hr

C.  55 km/hr

D.  60 km/hr

1
Correct Answer :
50 km/hr
Explanation :

Speed of the train relative to man = (125/10) m/sec

=> (25/2) m/sec

=> (25/2) x (18/5) km/hr

=> 45 km/hr

Let the speed of the train be z km/hr. Then, relative speed = (z - 5) km/hr

=> z - 5 = 45 z = 50 km/hr


Related Questions

Interview Questions

MongoDB
Java Script
Node JS
PHP
JQuery
Python