Highland Company produces a lightweight backpack that is popular with college students. Standard variable costs relating to a single backpack are given below: Direct materials Direct labor Variable manufacturing overhead Total standard cost per unit Standard Quantity or Hours ? Standard Price or Rate $ 6.00 per yard Standard Cost $ ? ? ? ? ? $2 per direct labor-hour ? $ ? Overhead is applied to production on the basis of direct labor-hours. During March, 800 backpacks were manufactured and sold. Selected information relating to the month's production is given below: Variable Manufacturing Total standard cost allowed* Actual costs incurred Materials price variance Materials quantity variance Labor rate variance Labor efficiency variance Variable overhead rate variance Variable overhead efficiency variance *For the month's production. Materials Used Direct $ 19,200 Labor $ 9,200 Overhead $ 1,600 $ 11,100 ? $ 4,740 ? $ 3,000 U ? ? ? ? The following additional information is available for March's production: Actual direct labor-hours Difference between standard and actual cost per backpack produced during March 1,200 $ 0.15 F