The Principles Corporation is a manufacturer of centrifuges. Fixed and variable manufacturing overheads are allocated to each centrifuge using budgeted assembly-hours. Budgeted assembly time is 2 hours per unit. The following table shows the budgeted amounts and actual results related to overhead for June 2017. Page Layout Formulas View Home Insert B Data E 1 Review G Actual Static The Principles Corporation (June 2017) Results Budget 2 Number of centrifuges assembled and sold 225 110 3 Hours of assembly time 360 4 Variable manufacturing overhead cost per hour of assembly time $32.00 5 Variable manufacturing overhead costs $11.933 6 Fixed manufacturing overhead costs $12, 180 $10.780 Required: Prepare an analysis of all variable manufacturing overhead and fixed manufacturing overhead variances using the columnar approach in Exhibit 8-4 (page 324). 2. Prepare journal entries for Principles June 2017 variable and fixed manufacturing overhead costs and variances; write off these variances to cost of goods sold for the quarter ending June 30, 2017 3. How does the planning and control of variable manufacturing overhead costs differ from the planning and control of fixed manufacturing overhead costs