"A train running at a speed of 90 km/hr crosses a platform double its length in 36 seconds.
Channel: Doubtnut
Date: 2020-04-05

"A train running at a speed of 90 km/hr crosses a
 platform double its length in 36 seconds. What is the length of the platform
 in metres?
`200`
b. `300`
c. `450`
d. Cannot
 be determined 
e. none of these"