Question: During a given work shift of 8 hours, a worker is exposed to two coexisting sources of noise for five hours, one at 85 dBA

During a given work shift of 8 hours, a worker is exposed to two coexisting sources of noise for five hours, one at 85 dBA and the other at 88 dBA. For the remaining three hours, he is exposed to one noise source of 92 dBA. Determine whether this exposure level exceeds the OSHA permissible noise exposures.

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