iasNav Company applies overhead on the basis of direct labor hours in department B. Two direct labor hours are required for each product unit. Planned production for the period was set at 9,000 units. Manufacturing overhead was budgeted at $135,000 for the period, 20% of this cost is xed. The 17,200 hours worked during the period resulted in production of 8,500 units. Variable manufacturing overhead costs incurred were $108,500, and xed manufacturing overhead costs were $23,000. Required - Calculate the VOH spending variance for the period. 3 marks a b. Calculate the VOH efficiency variance for the period. 3 marks E\" Calculate the FOH spending (budget) variance for the period. 3 marks d. Calculate the FOH production volume variance for the period. 3 marks e. Reconcile the Mfg OH account to show the balance 2 marks