Gilbert Company is a job-order manufacturer specializing in manufacturing gear boxes to meet customers' individual requirements. For 2022 , it estimated the overhead costs to be $12,560,000 - to be allocated using a predetermined rate based on machine-hours. Tanner Gilbert, the production manager, estimated that his company will use 160,000 machine-hours in 2022. During the month of January, Gilbert worked on two jobs, which consumed the following resources: At the end of the year, Gibert recorded the consumption of 158,700 machine-hours and incurred actual manufacturing overhead amounting to $12,538,250. Required: 1. Compute the predetermined overhead allocation rate for 2022. 2. Compute the total cost per unit for each job. 3. Determine the total manufacturing overhead applied to jobs during the year. 4. Calculate the under- or overapplied overhead for the year and show how you will dispose this amount at the end of the year