Question

A train crosses a man in 5 sec and a bridge of length 300 m in 20 sec. Find the speed and length of the train?

Answer 1

Answer:

Let length of the train=X

speed of the train=X/5

Length of the bridge=300m

time taken to cross the bridge=20sec

We know that speed=Distance/time

So,

X/5=(300+X)/20

5(300+X)=20X

1500+5X=20X

15X=1500

X=100

Length of the train=100m

speed of the train=100/5=20m/s