Question

A train travels from station X to station Y with a speed of 40Km/hr and returns with a speed of 50Km/hr then average speed of total journey is ​

Answer 1

Explanation:

let the dist be 'a km' from X to Y which is equal to Y to X.

dist=a + a=2a

total time by train=a/40+a/50=9a/200hr

avg speed =total dist/total time

= 2a/9a/200=44.45km/hr

if the ans is right then thanks