Shade Company adopted a standard cost system several years ago. The standard costs for direct labor and direct materials for its single product are as follows: Materials 15 kilograms x $12/kilogram) = $60/unit direct labor (3.5 hours/unit * $20four) - $70 unit. All materials are issued at the beginning of processing. The operating data shown below were taken from the records for December None In-process beginning inventory In-process ending inventory-80% complete as to labor Units completed during the period Budgeted output Purchases of materials (in kilograms) Total actual direct labor cost incurred Direct labor hours worked (AQ) Materials purchase-price variance Increase in materials inventory in December 11.020 units 6,820 units 7. units 43,00 $538,748 27,100 hours $ 4,300 favorable 3,050 kilograms The direct labor rate variance for December, to the nearest dollar, was