Tharaldson Corporation makes a product with the following standard costs: Direct materials Direct labor Variable overhead Standard Quantity or Hours 6.2 ounces 0.5 hours 0.5 hours Standard Standard Price or Cost Per Rate Unit $ 3.00 per ounce $18.60 $10.00 per hour $ 5.00 $7.00 per hour $ 3.50 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 3,400 units 2,800 units 21,200 ounces 22,300 ounces 480 hours $ 42,100 $ 13,400 $ 3,700 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 variable overhead efficiency variance for June is