Question: Two pianos each sound the same note simultaneously, but they are both out of tune. On a day when the speed of sound is 343

Two pianos each sound the same note simultaneously, but they are both out of tune. On a day when the speed of sound is 343 m/s, piano A produces a wavelength of 0.769 m, while piano B produces a wavelength of 0.776 m. How much time separates successive beats?

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