Hurren Corporation makes a product with the following standard costs: Standard Price or Rate Standard Cost Per Unit Standard Quantity or Hours 4.4 grams 0.7 hours $8.00 per gram | $19.00 per hour $35.20 $13.30 Direct materials Direct labor Variable overhead 0.7 hours $4.00 per hour $2.80 The company reported the following results concerning this product in June. Originally budgeted output 6,600 units Actual output 6,500 units Raw materials used in production 28,380 | grams Actual direct labor-hours | 4,500 | hours Purchases of raw materials 31,800 grams Actual price of raw materials $8.10 purchased gram per $19.90 per Actual direct labor rate hour per Actual variable overhead rate $3.70 hour 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