Question

A train travels 360 km at a uniform speed if the speed of the train had been 5 km per hour more it would have taken 1 hour less for the same journey find the original speed of the train

Answer 1

Let the spees of the train be v and the distance which have to cover be x and time taken be t
.
Given
x=360km
In first case train have to cover 360km in the hours.
speed the train,(v) = 360/t..............(1)
In second case ,

speed had been 5km/h more, then it would have taken 1 hour less to cover the same distance.
so speed= v+5
time = t-1 hours.
So ,
speed of train ,
v+5 = 360/(t-1).........................(2).
see picture!
speed of train=40 km/hr.