plane’s sound detector perceives the horn’s sound, the plane has traveled a distance equal to one-half its altitude above the ocean.

Question

If it takes the sound 1.658 s to reach the plane, determine the altitude of the plane. The speed of sound is 343 m/s.
Answer in units of m.

Answer 1

plane’s sound detector perceives the horn’s sound, the plane has traveled a distance equal to one-half its altitude above the ocean. >>

This makes no sense.

Answer 2

yyyup