Question

the train crosses a pole in 6.4seconds and a 220 metres long platform in 15.2 seconds what is the speed of train​

Answer 1

Step-by-step explanation:

$x \times 15.2 = (x + 220) \times 6.4 \\ \\ 8.8 \times x = 1408 \\ \\ x = 160$

speed is

$160 \times 6.4 = 1024$

answer is 1024 m/s

Answer 2

The speed of the train is 25 m/s.

Step-by-step explanation:

Given:

The train crosses a pole in 6.4 seconds and a 220 metres long platform in 15.2 seconds what is the speed of train

Solution:

Let the length of the train be x

First case,

Speed = $\frac{x}{6.4}$

Second case,  

Distance = x+ 220

Speed = $\frac{(x +220)}{15.2}$

Equating both the cases,

x= 160 metres

Speed of the train = $\frac{160}{6.4}$= 25 m/s

Result:

The speed of the train is 25 m/s.

To know more:

A train running at a speed of 108 km / hr. It crosses a 365 m long platform in 21 sec. what is the length of the train​

https://brainly.in/question/10409637