Doogan Corporation makes a product with the following standard costs: Standard Quantity or Hours Standard Price or Rate Direct materials 7.8 grams $ 2.40 per gram Direct labor 0.5 hours $ 24.00 per hour Variable overhead 0.5 hours $ 7.40 per hour The company produced 5,600 units in January using 39,710 grams of direct material and 2,420 direct labor-hours. During the month, the company purchased 44,800 grams of the direct material at $2.10 per gram. The actual direct labor rate was $23.30 per hour and the actual variable overhead rate was $7.20 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 January is: