Sound travels at a speed of 330m/s & light travels at 300,000 km/s. What is speed of sound in km/h?

How do i also calculate how far away a lightning flash occured if the sound was heard 6.4 seconds, after the lightning was seen? It relates to the above information.

1km = 1000m

Covenrrt the speed of sound to km/s by dividing it by 1000 = 0.33 km/s

0.33 km/s x 6.4s = 2.112km

flash -> 6.4 x 330m/s = 2112 m => 2.112 km...

330 m/s
330*60*60 meter/ hour
1188000 m/h
soundspeed: 1188 km/h

6.4 s* 330 m/s = 2112 m = 2.112 km

assumed that the light speed is greater than sound speed

light speed >>>> sound speed..
so, you can neglect the light travel time...

sound: 330m/s

330m=0,33km

sound: 0,33km/s

1 hour=3600 s

sound: 0,33km/s in 1 hour: 0,33km*3600s=1188km/h

a ligtning strike occured with a sound heard after 6,4 seconds, means that it takes 6,4 seconds for the sound from the strikning point to reach our ears:

distance = speed*time
distance = 0,33km/s*6,4s
distance = 2,11km