Marvel Parts, Incorporated, manufactures auto accessonies. One of the company's products is a set of seat covers that can be adjusted to fit nearly any small car. The company has a standard cost system in use for all of its products. According to the standards that have been set for the seat covers, the factory should work 990 hours each month to produce 1,980 sels of covers. The standard costs associated with this level of production are: During August, the factory worked onty 1,000 direct labor-hours and produced 2.200 sels of covers. The following actual costs were recorded during the month: At standard, each set of covers should require 3.0 yards of material. All of the materials purchased during the month were used in production. Required: 1. Compute the materlals price and quantity variances for August. 2. Compute the labor rate and efficiency variances for August. 3. Compute the variable overhead rate and efficiency variances for August