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 $630$ hours each month to produce $2,100$ sets of covers. The standard costs associated with this level of production are:

Total Per Set of Covers

Direct materials $ $38,640$ $ $18\mathrm{.}40$

Direct labor $ $6,3003\mathrm{.}00$

Variable manufacturing overhead $($based on direct labor$-$hours$)$ $ $3,1501\mathrm{.}50$

$ $22\mathrm{.}90$

During August, the factory worked only $500$ 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 $(5,000$ yards$)$ $ $36,000$ $ $18\mathrm{.}00$

Direct labor $ $6,4003\mathrm{.}20$

Variable manufacturing overhead $ $4,4002\mathrm{.}20$

$ $23\mathrm{.}40$

At standard, each set of covers should require $2\mathrm{.}3$ 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.

$($Indicate the effect of each variance by selecting $"$F$"$ for favorable, $"$U$"$ for unfavorable, and "None" for no effect $($i$.$e$.,$ zero variance$).$ Input all amounts as positive values.$)$