[SOLVED] Sound Level 1. The problem statement, all variables and given/known data If sound intensity level is reduced from 90dB to 75 dB, what is the ratio of the new sound level to the old? 2. Relevant equations Sound Intensity Level = 10 log (I/Io) 3. The attempt at a solution 10 log 90 = 1.954 10 log 75 = 1.875 1.875/1.954 = .956 This probably goes against every physical law that exists, but it's all I've come up with so far. Help, please!