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7. The personnel manager at Powerwest Inc. wants to esti- mate the direct and cumulative average direct labor hours for producing 30 locomotive train units during the next year. He estimates from past experience that the learning rate is 90 percent. The production department estimates that manufacturing the first unit will take 30,000 hours. Each employee averages 200 hours per month. The production rate forecast is as follows: Production Rate (units) Production Rate (units) Month Month January February March April May June July August September October November December a. How many direct hours are required to produce the 30th unit? b. How many total hours are needed to produce all 30 units? C. What is the maximum number of employees required next year? d. If the learning rate were changed to 0.85, what would be the impact on the total hours and the number of employees needed to produce 30 units