Question

A train that is 280 metres long, travelling at a uniform speed, crosses a platform in 60 seconds and passes a man standing on the platform in 20 seconds. What is the length of the platform in metres?

• A. 560

Answer 1

The correct option is A 560
Let the length of platform is x and velocity of train is V.

$Distance=Vel.\times time$

$(280+x)=V\times 60$ ...(i)
$280=V\times 20$ ....(ii)

From equation (i) and (ii), we get
$x=560m$