Could u please solve this question.I got this from one sample paper.It is urgent Q: An Express train makes arun of 240km at certain speed.Another train whose speed is 12k/h less takes an hour longer to cover the same distance.Find the speed of express train.

dear student,

let the speed of the express train be x kn/h

we know that speed= dist/time

so,

time taken by the expres train=240/x hrs

the speed of the other train= x-12 km/h

so time taken by the other train to cover the same distance=240/(x-12) hr

ATQ,

time taken by the other train = time taken by exp train +1

so,

solving we get,

x=60