Question

In a railway station on platform-1 the duration after which a train passes is 40
minutes and on platform-2 it is 1 hour. If the first train at each platform passes at
9:00am, when will the two platforms have trains passing again at the same time?
HINT: USE LCM

Answer 1

Answer:

Speed = (54×18×5 )m/sec=15m/sec

Length of the rain = (15 x 20) m = 300 m

Let the length of the platform be x metres

Then 36x+300 =15

⇒x+300=540⇒x=240m

I hope it will helpful,.....