Case Study 4: The following data apply to the operation of a particular automated manufacturing system: Direct labor rate = $12.00/h; Number of operator of the system = 1 Applicable labor factory overhead = 60% Capital investment for the automation system = $300,000 Annual additional expenses = $0 Service life = 7 years and Savage value = $40,000 Applicable machine factory overhead = 40% The system is operated one shift (3000 hours/year). Answer the following questions: a. Draw the cash flow of the machine situation (not including labor cost). b. Use a rate of return of 15% to determine the appropriate hourly rate for this worker-machine system.