Asking about this question below:

Question 4 {22 marks[ Frontier Company manufactures specialized machinery and uses a job costing system. Costs include direct materials, direct manufacturing labour and manufacturing overhead which is allocated using assembly support hours. Manufacturing overhead costs for 2019 are as fol ows: Actual Budget Manufacturing Overhead Costs $264,500 $315,000 Assembly Support Hours 23,000 21,000 Year and assembly support hours and balances for each account are: Actual Assembly Account Ending Balance Support Hours Work in Process $240,000 5,050 Finished Goods $180,500 5,750 Cost of Goods Sold $410,000 12,200 Required 1. Calculate the actual and budgeted manufacturing overhead rate for 2019. 2. Using actual and normal costing, calculate the total cost forJob 789. Direct materials were $9,000 and direct manufacturing labour costs were $6,325. It took 650 assembly support hours to complete the job. 3. Under normal costing, determine if manufacturing overhead costs have been over or under allocated and by how much. 4. Prorate the over or under allocated manufacturing overhead costs using a. Written off to Cost of Goods Sold b. Prorated based on ending balances (before prorationl in each ofthe three accounts. c. Prorated based on the overhead allocated in the ending balances, before proration, in each of the three accounts