A person 1.20 km away from you fires a gun. A wind is blowing at 10.0 m/s.

Question:

A person 1.20 km away from you fires a gun. A wind is blowing at 10.0 m/s. How much different from the “no wind” time of travel is there for the sound to reach you compared to the situation when the wind is blowing
(a) Toward you and
(b) Toward the person who fired the gun? (Take the speed of sound to be 345 m/s.)