This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Speed of sound = 300 m/s
distance travelled in 5 second = 300×5 = 1500m
distance travelled in 6 second = 300×6 = 1800m

If they are on opposite side of the source, the distance will be maximum
D = 1500+1800 = 3300m 

If they are on same side of the source, the distance will be minimum
D = 1800-1500 = 300m

So maximum distance is 3300m and minimum distance is 300m.