1. The problem statement, all variables and given/known data A family ice show is held at an enclosed arena. The skaters perform to music with level 80.0 dB. This is too loud for your baby, who yells at 75.0 dB. (a) What total sound intensity engulfs you? 2. Relevant equations I ∝ A2 3. The attempt at a solution Why did the answer sum the individual intensity of the music and the baby for the total sound intensity? Itotal = Imusic + Ibaby? I thought the sound that one hear should be the superposition of the waves produced by the music and the baby. Assuming it is constructive interference, the total sound intensity should be proportional to the sum of the amplitude squared. Thus the total sound intensity should be Itotal = (Imusic0.5 + Ibaby0.5)2. Can someone tell me which is the right way? Because I got another question which did the method I proposed and I feel that it makes more sense.