PROBLEM 4 The following costs are related to job order 3-5 (produces 500 units of a certain product). DM= $1,500 DL (90 Direct labor hours) = $ 820 If you know that total MOH for this month is $4,000, and total DLH for this month is 2,000 hours, and total machine hours for this month is 1,000 hours. Required: 1. Calculate the predetermined OH rate. 2. Calculate the MOH for the job order 305. 3. If you know that this company is relying mainly on workers' efforts, calculate the total manufacturing cost for job order 305. 4. Calculate the average cost per unit