Records at the Farnsworth Corporation contained the following data for the most recent period of activity:

Actual total direct labor cost $ $515,510$

Actual direct labor$-$hours worked $15,320$

Standard direct labor$-$hours allowed for actual output $($flexible budget$)14,640$

Direct labor price variance $$47,500$ F

Actual variable overhead $ $349,500$

Standard variable overhead rate per standard direct labor$-$hour $ $21$

Variable overhead is applied based on standard direct labor$-$hours allowed.

Required:

Compute the labor and variable overhead price and efficiency variances.

Note: Do not round intermediate calculations. Indicate the effect of each variance by selecting $"$F$"$ for favorable, or $"$U$"$ for unfavorable. If there is no effect, do not select either option.