A milling department has 10 machines. Each operates an average of eight hours before requiring adjustment, which takes an average of 2.67 hours. While running, each machine can produce 40 pieces an hour. Use Table 1, Table 2 and Table 3. a. With one adjuster, what is the net average hourly output per machine? (Round your answer to 1 decimal place.) b. If machine downtime cost is $65 per hour and adjuster cost is $29 per hour, how many adjusters would be optimal? multiple choice 1 2 3 4 5