ControlMarvel 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 $1,065$ hours each month to produce $2,130$ sets of seat covers. The standard costs associated with this level of production are:

Total Per Set of Covers

Direct materials $ $35,358$ $ $16\mathrm{.}60$

Direct labor $ $8,5204\mathrm{.}00$

Variable manufacturing overhead $($based on direct labor$-$hours$)$ $ $3,1951\mathrm{.}50$

$ $22\mathrm{.}10$

During August, the factory worked $1,050$ direct labor$-$hours and produced $2,700$ sets of covers. The following actual costs were recorded during the month:

Total Per Set of Covers

Direct materials $(6,000$ yards$)$ $ $43,740$ $ $16\mathrm{.}20$

Direct labor $ $11,3404\mathrm{.}20$

Variable manufacturing overhead $ $5,6702\mathrm{.}10$

$ $22\mathrm{.}50$

At standard, each set of covers should require $2\mathrm{.}0$ 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.