a train 100 m long passes another train coming from opposite direction in 9 seconds . if the speed be 38 km/hr and 38 km /hr respectively. find the length of other train
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Step-by-step explanation:
ANSWER
Let the speed of the slower train be x m/sec.
Then, speed of the fater train = 2x m/sec.
Relative speed = (x + 2x) m/sec = 3x m/sec.
∴
8
100+100
=3x
⇒24x=200
⇒24x=200
⇒x=
3
25
So, speed of the faster train =
3
50
m/sec
(
3
50
×
5
18
)km/hr
=60km/hr
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