Doby Corporation makes a product with the following standard costs:

In July the company produced $5,200$ units using $14,450$ ounces of the direct material and $1,070$ direct labor$-$hours. During the month

the company purchased $15,600$ ounces of the direct material at a price of $$7\mathrm{.}2$ per ounce. The actual direct labor rate was $$16\mathrm{.}2$ per

hour and the actual variable overhead rate was $$5\mathrm{.}4$ per hour. The materials price variance is computed when materials are

purchased. Variable overhead is applied on the basis of direct labor$-$hours.

Required:

a$.$ Compute the materials quantity variance.

b$.$ Compute the materials price variance.

c$.$ Compute the labor efficiency variance.

d$.$ Compute the labor rate variance.

e$.$ Compute the variable overhead efficiency variance.

f$.$ Compute the variable overhead rate variance.

Note: 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.