Question

ek railgadi kisi teliphone khambe ko 1 secend me tatha 150 meter lambe platform ko 7 second me par larti hain! railgadi ki chal kya hain!

Answer 1

let the length of the train be x

x/1 = (x+150) / 7

7x = x + 150

6x = 150

x = 150/6

x = 25

length of the train = 25 m

speed of the train = 25/1 = 25 m/s