Answer:
Results are below.
Explanation:
To calculate the predetermined manufacturing overhead rate we need to use the following formula:
Predetermined manufacturing overhead rate= total estimated overhead costs for the period/ total amount of allocation base
Predetermined manufacturing overhead rate= (4,320,000/240,000) + 2
Predetermined manufacturing overhead rate= $12.29 per machine hour
Job P90:
Direct materials $1,840
Direct labor cost $1,320
Machine-hours used 87
Total cost= 1,840 + 1,320 + (12.29*87)
Total cost= $4,229.23