Two noisy vehicles, V1 and V2, are traveling with 40 m between them on a highway. Two microphones, M1 and M2 are used to measure the resulting acoustic noise levels. When V1 and V2 are located at distance of 5 m and 45 m from M1, respectively, M1 records sound pressure level SPL1 = 90 dB. When V1 and V2 are located at distance of 30 m each from M2, respectively, M2 records sound pressure level SPL2 = 82 dB. Calculate the SPL at a point located 100 m from each vehicle. Consider the vehicle noises as point sources, throughout.

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