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Mathematics 9 Online
OpenStudy (anonymous):

The noise from a power mower was measured at 102 dB. The noise level at a rock concert was measured at 122 dB. Find the ratio of the intensity of the rock music to that of the power mower.

OpenStudy (kropot72):

The dB is a logarithmic ratio. The rock concert is (122 - 102) dB louder than the power mower.

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