Wadding Corporation applies manufacturing overhead to products on the basis of standard machine-hours. For the most recent month, the company based its budget on 5,000 machine-hours. Budgeted and actual overhead costs for the month appear below:

	Original Budget Based on 5,000 Machine-Hours	Actual Costs
Variable overhead costs:
Supplies	$ 12,500	$ 13,230
Indirect labor	46,000	50,250
Fixed overhead costs:
Supervision	21,100	20,740
Utilities	7,300	7,310
Factory depreciation	8,300	8,610
Total overhead cost	$ 95,200	$ 100,140

The company actually worked 5,020 machine-hours during the month. The standard hours allowed for the actual output were 5,010 machine-hours for the month. What was the overall variable overhead efficiency variance for the month?