As the manager of an auto repair shop, you decide to compile some statistics on the cars you service. last week your shop serviced 72 cars. on 12 of these cars you replaced the muffler. express this as a percent of cars serviced that needed mufflers.

17 %

Step-by-step explanation:

12 of 72 cars needed mufflers

% = cars needing mufflers/total cars × 100 %

  = 12/72 × 100 %

  = 17 %

17 % of the cars serviced needed muflers.

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