Using an intensity of 1 × 10⁻¹² W/m² as a reference, the threshold of hearing for an average young person is 0 dB. Person 1 and person 2, who are not average, have thresholds of hearing that are β₁ = −8.00 dB and β₂ = +12.0 dB. What is the ratio I₁/I₂ of the sound intensity I₁ when person 1 hears the sound at his own threshold of hearing compared to the sound intensity I₂ when person 2 hears the sound at his own threshold of hearing?