Question

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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Answer 1

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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