E 6-6 Labor Rate and Efficiency Variances To produce one unit of Product CD requires eight hours of labor at a standard cost per hour of $25.00. During the month of September, 5,500 units were produced. Actual hours and costs for the month are as follows: 1. Compute the actual cost per hour of direct labor for the month of September. 2. Compute the labor rate variance. 3. Compute the labor efficiency variance