1 .	Two guns were fired from the same place at an interval of 5 min but a man sitting in a train moving towards that place heard the second sound at an interval of 4 min 30 sec. Find speed of train. (speed of sound = 330 m/sec)
[ A ]    103 km/hr [ B ]    112 km/hr [ C ]    123 km/hr [ D ]    132 km/hr
Answer : Option D Explanation :
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