Question

a train 100 m long passes another train coming from opposite direction in 9 seconds . if the speed be 38 km/hr and 36 km /hr respectively. find the length of other train
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Answer 1

Answer:

(100+x)x18/(34+38)×5=9

(100+x)=36x5

X= 80m

Answer 2

Step-by-step explanation:

Speed off 1St train=38km/h=(38×5/18)m/sec=95/9 m/sec.

speed of 2nd train=34km/h=(34×5/18)m/sec=85/9m/sec.

The train move in opposite direction, therefore the apporaching speed=(85/9+95/9)=180/9=20m/sec.

speed = distance/time

=20=100m+ length of train/9

=180=100+length of train.

=180-100=length of train.

=80m answer