Description of Cost Pool Machine maintenance costs........... Estimated Activity for This Year 15,000 Engineering change orders......... Estimated Cost Cost Driver $ 600,000 Number of machine hours $ 270,000 Number of change orders $1.320,000 Pounds of hazardous materials generated $2,190,000 3,000 Hazardous waste disposal............ 4,000 Total overhead cost. During the year, Job 356 is started and completed. Usage for this job follows: 300 pounds of direct materials at $70 per pound 20 direct labor hours used at $25 per labor hour 90 machine hours used 9 change orders 50 pounds of hazardous waste generated Requirements 1. Calculate the cost of Job 356 using the traditional plantwide manufacturing overhead rate based on machine hours. 2. Calculate the cost of Job 356 using activity-based costing. 3. If you were a manager, which cost estimate would provide you more useful informa- tion