The speed of sound is approximately 340 m / s. How long will it take for the sound to travel from the batter to a spectator who is seated 30 meters away? How long will it take if the spectator is 150 meters away?

The first answer is 3/34 sec and the second answer is 15/34 sec.

Set up a proportion for these problems. For the first question,

340/1 = 30/x

Cross multiply:

340*x = 1*30

340x = 30

Divide both sides by 340:

340x/340=30/340

x = 30/340 = 3/34

For the second question,

340/1 = 150/x

Cross multiply:

340*x = 150*1

340x=150

Divide both sides by 340:

340x/340 = 150/340

x = 150/340 = 15/34