Whispering Winds Service has over 200 auto-maintenance service outlets nationwide it provides primarily two lines of service: oll changes and brake repair. Oil changerelated services represent 75% of its sales and provide a contribution margin ratio of 20%. Brake repair represents 25% of its sales and provides a 60% contribution margin ratio. The company's fixed costs are $12,480,000 for $84,000 per service outlet). (a) Calculate the dollar amount of each type of service that the company must prowide in order to bireak even. Oilchanges 5 Brakerepair $ Attempts:0 of 3 used (b)