Question

a train 80 m long takes half a minute in crossing a tunnel 420 m long. find the speed of the train.

Answer 1

The speed of train is 1000 m / minute

Step-by-step explanation:

Length of train = 80 m

Length of tunnel = 420 m

Total distance = 80 m +420 m = 500 m

Time taken to cross tunnel = $\frac{1}{2}$ minute

Speed of train = $\frac{Distance}{Time}$

Speed of train = $\frac{500}{\frac{1}{2}}$

Speed of train =1000 m / minute

Hence The speed of train is 1000 m / minute

#Learn more :

A passenger train 125 meter long takes half a minute in crossing a tunnel 355 meters long what is the speed of the train.

https://brainly.in/question/13467392

Answer 2

Step-by-step explanation:

v=(80 + 420 m ) / 30 second

(500×18)÷ 30×5

9000 ÷ 150

= 60 km/hr

The speed of the train is 60 km/hr