Bulluck Corporation makes a product with the following standard costs Standard Quantity or Hours 3.5 grams 0.7 hours 0.7 hours Standard Price or Rate ? 1.00 per gram $11.00 per hour $ 2.00 per hour Direct materials Direct labor Variable overhead The company reported the following results concerning this product in July Actual output Raw materials used in production Actual direct labor-hours Purchases of raw materials Actual price of raw materials purchased $ 1.20 per gram Actual direct labor rate Actual variable overhead rate 3,000 units 11,370 grams 1,910 hours 12,100 grams s 11.40 per hour $ 2.10 per 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 July is