Moon Industries employs a standard cost system in which direct materials inventory is carried at standard cost. Moon has established the following standards for the prime costs of one unit of product. During May, Moon purchased 160,000 pounds of direct material at a total cost of $304,000. The total direct labor wages for May were $37,800. Moon manufactured 19,000 units of product during May using 142,500 pounds of direct material and 5,000 direct labor hours. Compute direct labor rate variance for May