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Two guns were fired from the same place at an interval of 13 minutes but a person in a train approaching the place hears the second report 12 minutes 30

seconds after the first .Find the speed of the train ,supposing that sound travels at 330 metres per second.


13(330)60= 257400 m
is the distance moved by sound of bullet
Observer moving at speed of v records after 750 seconds
v=13.2 m/s
3 4 3
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