Miguez Corporation makes a product with the following standard costs Standard Price or Rate $ 7.40 per liter $26.00 per hour $ 2.40 per hour Standard Quantity or Standard Cost Direct materials Direct labor Variable overhead Hours 2.7 liters 0.5 hours 0.5 hours Per Unit $19.98 $13.00 $ 1.20 The company budgeted for production of 3,000 units in September, but actual production was 2,900 units. The company used 5,840 liters of direct material and 1,720 direct labor-hours to produce this output. The company purchased 6,200 liters of the direct material at $7.60 per liter. The actual direct labor rate was $28.10 per hour and the actual variable overhead rate was $2.20 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 rate variance for September is