Question
Fri March 11, 2011 By: Benin John

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.

Expert Reply
Fri March 11, 2011
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
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