Solve the Problem. -Two Recording Devices Are Set 2,800 Feet Apart, with the Apart

Multiple Choice

Solve the problem.
-Two recording devices are set 2,800 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, 400 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?

A) 430.77 feet
B) 5562.37 feet
C) 1142.61 feet
D) 1486.61 feet