Question

A train of 360 m long is traveling at a soled of 45km/hr. Find the time taken to cross a platform of 140m.
Friends pls do this calculation in direct and inverse variations pls..

Answer 1

length of train =360

speed=25/2m/s

length of platform=140m

x/y    360+140/time    25/2/1

since time and speed vary directly

time=500×2/25

time=40 sec