Marvel Parts, Incorporated, manufactures auto accessories including a set of seat covers that can be adjusted to fit most cars. According to its standards, the factory should work hours each month to produce sets of seat covers. The standard costs associated with this level of production are:

Total Per Set of Covers

Direct materials $ $

Direct labor $

Variable manufacturing overhead based on direct laborhours $

$

During August, the factory worked direct laborhours and produced sets of covers. The following actual costs were recorded during the month:

Total Per Set of Covers

Direct materials yards $ $

Direct labor $

Variable manufacturing overhead $

$

At standard, each set of covers should require yards of material. All of the materials purchased during the month were used in production.

Required:

Compute the materials price and quantity variances for August.

Compute the labor rate and efficiency variances for August.

Compute the variable overhead rate and efficiency variances for August.