Marvel Parts, Incorporated, manufactures auto accessories. One of the company$$s products is a set of seat covers that can be adjusted to fit nearly any small car. The company uses a standard cost system for all of its products. According to the standards that have been set for the seat covers, the factory should work $2,850$ hours each month to produce $1,900$ sets of covers. The standard costs associated with this level of production are:

Total Per Set of Covers

Direct materials $ $42,560$ $ $22\mathrm{.}40$

Direct labor $ $51,30027\mathrm{.}00$

Variable manufacturing overhead $($based on direct labor$-$hours$)$ $ $6,8403\mathrm{.}60$

$ $53\mathrm{.}00$

During August, the factory worked only $2,800$ direct labor$-$hours and produced $2,000$ sets of covers. The following actual costs were recorded during the month:

Total Per Set of Covers

Direct materials $(12,000$ yards$)$ $ $45,600$ $ $22\mathrm{.}80$

Direct labor $ $49,00024\mathrm{.}50$

Variable manufacturing overhead $ $7,0003\mathrm{.}50$

$ $50\mathrm{.}80$

At standard, each set of covers should require $5\mathrm{.}6$ yards of material. All of the materials purchased during the month were used in production.

Required:

$1.$ Compute the materials 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.