[emada1969]

t1 = t2 + 6 (t1 time taken by the sound, t2 time of light)
The distance is the same d1 = d2
C x t2 = V x t1

3x108 t2 = 340 (t2 + 6) = 340 t2 + 2040

(3x108 – 340) t2 = 2040

t2= 0.0000068 sec

D = 2040 m
Ashraf elgendy