Calculating Acoustic Pressure: Threshold of Pain for the Ear

[t3rom]

Homework Statement

Atmospheric pressure is 101 kPa. Compute the acoustic pressure that corresponds to the threshold of pain for the ear. What percentage of atmospheric pressure is this?

Homework Equations

L=20log(P/Po)

Po is a constant = 2x 10-5
threshold of pain for the ear=130db

The Attempt at a Solution

I'm getting 63 Pa (or 0.06%) for the acoustic pressure but it doesn't correspond to the answer which is one of the following.

2%
200%
0.2%

Thanks!

 

[t3rom]

Turns out my calculation were wrong, I got the answer.