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QUESTION
On a workday the average decibel level of a busy street is 69 dB, with 102 cars passing a given point every minute.
On a workday the average decibel level of a busy street is 69 dB, with 102 cars passing a given point every minute. If the number of cars is reduced to 39 cars every minute on a weekend, what is the deci- bel level of the street?
