Question

If train travels @ 72 km/hr and crosses a post in 14 seconds, how long is the train?​

Answer 1

Answer:

280 metres

Step-by-step explanation:

Speed :- 72 Km/hr  or   20 m/s

Time :- 14 seconds

speed = distance / time

Distance = Speed * time

Distance = 20 * 14 meters

               = 280 metres

Answer 2

Answer:

Speed= 72×5/18

=20/1 m/ sec

Length (m)= 20. |. x

Time(sec)= 1. |. 14

This is a case of direct variation

x×1 = 20×14

x =280 m

Hope it helps

Thanks