Question

A train takes 4 see to cross telegraph post and 20 see to cross a 264 meter long bridge.Find the length of the train and its speed​

Answer 1

Answer:

length of the train=x

speed...: =v

time to cross the post=x/v=4 sec

time to cross the bridge=(x+264)/v=20 See

solving these get v=264/16=16.5 m/sec

and also x=66m

Here speed is 16.5 ml sec

and length of train 66m.