Zucker Corporaton uses a standard costing system in which variable manufacturing overhead is assigned to production on the basis of the numbe operations: - Variable manufacturing overtiead cost incurred $70,000 - Total variable manufacturing overhead variance: $4,550 Favorable - Standard machine setups allowed for actual production 3.550 - Actual machine setups incurred:3,500 The variable overhead rate variance is: Mulingle Choike $1000 favoroble 53500 Favorable 51,000 Untovocoble 33,500 Untavoresile