question_answer

Two guns were fired from the same place at an interval of 12 minutes. A person approaching the firing place in his car, hears the second shot 11 minutes after the first. If the speed of sound is 330 m/s, find the speed of the car.

A) 50 km. /h.

B) 72 km./h.

C) 90 km. /h.

D) 108 km./h.

E) None of these