How many times intense is 80 dB sound than a 20 dB sound?

Explanation

Increase in loudness level of sound is
`L_(2) - L_(1) = 10log(I_(2)//I_1)`
`80 - 20 = 10log(I_(2)//I_1)`
`6 = log(I_(2)//I_1)`
`(I_(2)//I_1) = 10^(6)`