Question

a train leaves New Delhi at 19:15 hours and arrives Mathura 22:05 the distance between two stations is 144 kilometre then the speed of train is

Answer 1

Speed=Distance/time.
Distance=144km=144000m
and
time taken=
19=7pm
22=10pm
so time between 7:15 - 10:05 is 2hrs50min which is 170min=170×60=10200seconds.

So speed=144000/10200
1440/102
720/51.
=14.11m/sec.

Hope This Helps :)

Answer 2

t=10200 sec
d=144000 m
s=d/t
  =144000/10200
  =14.11 m/s
       OR
  =50.7 km/hr