Question

a train leaves new delhi at 1915 and arrives at mathura at 2205 hours .

Answer 1

1915H to 2205H = 2h 50 mins = 17/6 hours

Find the speed:

Speed = Distance ÷ Time

Speed = 144 ÷ 17/6

Speed = 50.82 km/h

Answer: The speed of the train is 50.82 km/h

Answer 2

s=d/t
t=1915-2205=290
s=144/290
divided we will get your answer