Gandalf Corporation establishes standard rates to plan and control its production. They have determined their standard variable overhead rate as $25 per direct labour hour and each unit requires 3.5 direct labour hours.

In 2019, Gandalf actually incurred 3,750 hours and total variable overhead cost of $92,812.50 to produce 890 units.

Required: Calculate spending, efficiency, and total variances for Gandalf's variable overhead costs.