MBA Exam

Two rifles are fired from the same place at a difference of 11 mins 45 secs.But a man who is coming towards the place in a train hears the second sound after 11 mins.Find the speed of train.

1) 72Km/h
2) 36Km/h
3) 81Km/h
4) 108Km/h

Read Solution (Total 1)

Let's take if the train is static the person would have heard the sound in 11min 45 sec.

But since the train is moving towards the sound for 11mins, He saved 45sec.

So, Distance traveled by train in 11mins= Distance traveled by the bullet(330 m/s) in 45 secs.

330*45=660*x;

x=22.5 m/s ---> 81kmph.
5 years agoHelpfull: Yes(0) No(0)

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