Viger Corporation has a standard cost system in which it applies manufacturing overhead to products on the basis of standard machine-hours (MHS). The company has provided the following data for the most recent month: Budgeted level of activity Actual level of activity Standard variable manufacturing overhead rate Actual total variable manufacturing overhead 8,900 MHS 9,100 MHS $ 7.60 per MH $66,600 What was the variable overhead rate variance for the month