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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Answered by
2
Answer:
(100+x)x18/(34+38)×5=9
(100+x)=36x5
X= 80m
Answered by
5
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
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