Two rifles are fired from the same palce at a difference of 11 min. 45 seconds. But a man who is coming towards the same place in a train hears the second sound after 11 minutes. Find the speed of the train (Assuming speed of sound = 330 m/s).

Options

A. 72 kmph
B. 36 kmph
C. 81 kmph
D. 108 kmph

Answer

C