Question

train of length l passes through a pole in t seconds. What is the length of the platform which it passes in 3t seconds
(1 Point)​

Answer 1

Answer:

Time = distance (I.e. length)/speed

Distance = l+p

Speed = l/t

Time = 3 seconds

3=l+pl/t  

3=ll/t+pl/t  

3−t=ptl  

3l−lt=pt  

p=3lt−l  

So there you have it, it's  3lt−l

here is your answer.

Step-by-step explanation:

Answer 2

Answer:

The length will be 2 l , if the time 3t is for complete crossing of train from platform

or

3 l if train reaches to the end of platform in 3t seconds

Step-by-step explanation:

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