NVM

[Dritnul]

the noise level in an empty testing hall is 40dB. when there is 100 students taking tests the noise level is 60dB. Assume all students contribute equally to noise power.
What is the noise level to the nearest dB when 50 students have finished?

looking more for the general equation than the answer

i think i found a website that helped

 

[drinkmorejava]

do your own homework, this is pretty basic algebra if you assume the surfaces react to sound the same regardless of the noise level.

 

[Dritnul]

Originally posted by: drinkmorejava
do your own homework, this is pretty basic algebra if you assume the surfaces react to sound the same regardless of the noise level.

its not homework :Q

 

[Acanthus]

As said above, unless you have some weird variables you can just apply an exponential equation to it.