Question

A train takes 10 seconds to pass a man standing on the platform 150m long and passes the platform in 22 sec . Calculate the length and speed of the train

Answer 1

Answer:

Let speed of the other train = S m /sec.

Speed of the first train = 30 kmph = (30 *5)/18 = 8.33 m/sec.

Relative speed = (8.33 + S) m/sec.

With this relative speed train needs to be covered (150 + 100) m in 10 seconds.

So,

ST = D

(8.33 + S) * 10 = 250

(8.33 + S) = 25

S = 16.67 m/sec

Speed = 16.67 m/sec = (16.67 * 18)/5 = 60 kmph.

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