Question

a train travels a distance 300 km at a constant spped if speed of the train is inceased by 5 km/hr the journey will take 2 hours left 30 minute late then its schedule​

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=300km

In first case train have to cover 300km in the hours.

speed the train,(v) = 300/t..............(1)

In second case ,

speed had been 5km/h more, then it would have taken 2 hours less to cover the same distance.

so speed= v+5

time = t-2 hours.

So ,

speed of train ,

v+5 = 300/(t-2).........................(2).

see picture!

speed of train=25 km/hr.