SOLUTION: Two recording devices are set 2400 feet apart, with the device at point A to the west of the device at point B. At a point on a line between the devices, 200 feet from point B, a

Question 723637: Two recording devices are set 2400 feet apart, with the device at point A to the west of the device at point B. At a point on a line between the devices, 200 feet from point B, a small amount of explosive is detonated. The recording devices record the time the sound reaches each one. How far directly north of site B should a second explosion be done so that the measured time difference recorded by the devices is the same as that for the first detonation? The answer is 440 feet, but I cannot get this answer.
Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!

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