Puvo, Inc., manufactures a single product in which variable manufacturing overhead is assigned on the basis of standard direct labor-hours. The company uses a standard cost system and has established the following standards for one unit of product StandardStandard Price or Standard ntity Rate Cost 5.8 pounds $0.60 per pound 3.48 0.5 hours $33.50 per hour $16.75 Variable manufacturing overhead 0.5 hours 8.50 per hour 4.25 Direct materials Direct labor During March, the following activity was recorded by the company . The company produced 2,400 units during the month. . A total of 19,400 pounds of material were purchased at a cost of $13,580 There was no beginning inventory of materials on hand to start the month, at the end of the month, 3.620 pounds of material remained in the warehouse . During March, 1,090 direct labor-hours were worked at a rate of $30.50 per hour . Variable manufacturing overhead costs during March totaled $14.061 The direct materials purchases variance computed when the materials are purchased. The labor rate variance for March is