Dirickson Incorporated has provided the following data concerning one of the products in its standard cost system. Variable manufacturing overhead is applied to products on the basis of direct labor-hours. Standard Quantity or Hours per Unit of Output Standard Price or Rate $9.40 per ounce Inputs Direct materials Direct labor Variable manufacturing overhead 7.6 ounces 0.10 hours $ 18.00 per hour 0.10 hours The company has reported the following actual results for the product for July Actual output Raw materials purchased Actual cost of raw materials purchased Raw materials used in production Actual direct labor-hours Actual direct labor cost Actual variable overhead cost $ 5.30 per hour 7,600 units 63,000 ounces $ 541,800 The variable overhead efficiency variance for the month is closest to 57,750 ounces 820 hours $ 16,072 $ 4,592