Tharaldson Corporation makes a product with the following standard costs: Standard Quantity or Hours Direct materials Direct labor Variable overhead 6.3 ounces 0.4 hours 0.4 hours Standard Price or Rate $2.00 per ounce $11.00 per hour Standard Cost Per Unit $ 12.60 $ 4.40 $ 6.00 per hour $ 2.40 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 3,300 units 2,600 units 19,500 ounces Actual cost of raw materials purchases Actual direct labor cost Actual variable overhead cost. 22,400 ounces 470 hours $ 42,000 $ 13,300 $ 3,650 The company applies variable overhead on the basis of direct labor-hours. The direct materials purchases variance is computed when the m The variable overhead efficiency variance for June is: