Exercise 11-6 (Video) Lewis Company's standard labor cost of producing one unit of Product DD is 3.70 hours at the rate of $12.90 per hour. During August, 40,600 hours of labor are incurred at $13.00 per hour to produce 10,800 units of Product DD. (a) Compute the total tabor variance. Total labor variance $ (b) Compute the labor price and quantity variances. Labor price variance $ Labor quantity variance Compute the labor price and quantity variances, assuming the standard is 4.10 hours of direct labor at $13.20 per hour. Labor price variance $ Labor quantity variance