At Eady Corporation, maintenance is a variable overhead cost that is based on machine-hours. The performance report for July showed that actual maintenance costs totaled $8.850 and that the associated rate variance was $270 unfavorable. If 5.200 machine-hours were actually worked during July, the standard maintenance cost per machine-hour was: Multiple Choice O $1.70 per MH O $1.75 per MH $1.65 per MH O $1.81 per MH