Tharaldson Corporation makes a product with the following standard costs: Standard Quantity or Hours 6.0 ounces 0.3 hours 0.3 hours Standard Standard Price or Cost Per Rate Unit $ 3.00 per ounce $18.00 $11.00 per hour $ 3.30 $ 9.00 per hour $ 2.70 Direct materials Direct labor Variable overhead The company reported the following results concerning this product in June. Originally budgeted output Actual output Raw materials used in production Purchases of raw materials Actual direct labor-hours Actual cost of raw materials purchases Actual direct labor cost Actual variable overhead cost 3,600 units 3,200 units 21,000 ounces 22,100 ounces 500 hours $ 42,300 $ 13,600 $ 3,800 The company applies variable overhead on the basis of direct labor-hours. The direct materials purchases variance is computed when the materials are purchased. The labor efficiency variance for June is