Find wavelength

Question

The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 330 vibrations per second and a wavelength of 3.2 Ft. Find the wavelength of another tone that has a pitch of 550 vibrations per second.

Answer 1

speed of wave/frequency = wavelength

speed of wave/330 = 3.2

speed of wave = 1056

use this value in the next part:

1052/frequency = wavelength

1056/550 = wavelength = 1.92 ft