Washburn Company produces earbuds. During the year, manufacturing overhead costs are estimated to be $216,000. Estimated machine usage is 2,700 hours. The company assigns overhead based on machine hours. Job No. 551 used 90 machine hours. Required:
a. Compute the predetermined overhead rate.
b. Determine the amount of overhead to allocate to Job No. 551.
c. Prepare the entry to assign overhead to Job No. 551 on January 15.

1. Predetermined Overhead Rate = Manufacturing overhead costs  / Machine Hours

Predetermined Overhead Rate = $216,000/2,700 hours

Predetermined Overhead Rate = $80 per machine hour

2. Allocated overheads =Predetermined Overhead Rate * Machine hours used by Job 551

Allocated overheads = $80 * 90 machine hour

Allocated overheads = $7,200

3. Date     Description                             Debit     Credit

 15/01     Work In Progress Inventory    $7,200      

                   Manufacturing overhead                   $7,200

               (To record allocation of overheads towards Job 551)

b is the correct answer