22 Puvo, incorporated, manutactures a single product in which variable manufacturing overhead is assigned on the basis of standard direct inbor hours. The company uses a standard cost system and has established the following standards for one unit of product 0.33 Don Standard Quantity Direct materials 7.2 pounds Direct labor 0.4 hours Variable manufacturing overhead 0.4 hours During March, the following activity was recorded by the company Standard Price or Rate $1.00 per pound $ 47.50 per hour $9.90 per hour tandard Cont $ 7.20 $ 19.00 $ 3.96 References The company produced 3,800 units during the month. A total of 20,800 pounds of material were purchased at a cost of $14,980. There was no beginning inventory of materials on hand to start the month at the end of the month. 5,020 pounds of material remained in the warehouse . During March, 1.230 direct labor-hours were worked at a rate of $44,50 per hour. Variable manufacturing overhead costs during March totaled $15.461 The direct materials purchases variance is computed when the materials are purchased The variable overhead rate variance for March is